Technic (429 parts)

Technic is a system unto itself, with a focus on connecting parts using pins and axles, but you will find plenty of Technic parts with studs as well.

Modern Technic sets include very few Classic (or 'System') parts containing studs, because they have moved towards an engineering-focused building system that abandons the awkward 5:6 ratio of classic bricks in favor of a 3-dimensional grid based on the width of a plate (5 units).

A large selection of Technic parts with studs remain in production for a completely different reason... Classic 'System-based' LEGO sets have adopted Technic as the primary way to add interactive play features and a critical tool in making models stronger.

It is interesting to see how far Technic has evolved away from the classic Technic brick. In recent years, there has been a push to make Technic sets more realistic, which has resulted in a huge number of Technic 'panel' elements which can give the exterior of the model exactly the right shape. This is especially true in the high-end Technic supercars which need to match the appearance of a complex curved vehicle.

Technic (429 parts)
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View:ScaleLabelTable

Brick

Technic bricks have studs, allowing them to integrate with brick-built 'LEGO System' models.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
1×1 Technic Brick6541
88
806297
1766102
28197
1993-202634 years
1×2 Technic Brick3700
47
1526656
314240
34116
1976-202651 years
1×4 Technic Brick3701
123
6809114
1606114
21351
1977-202650 years
1×6 Technic Brick3894
246
3814200
998191
12848
1979-202648 years
1×8 Technic Brick3702
256
3304238
825234
15606
1977-202650 years
1×10 Technic Brick2730
386
1711378
483401
13762
1990-202637 years
1×12 Technic Brick3895
346
2225312
568347
14683
1979-202648 years
1×14 Technic Brick32018
481
1519416
415455
91201
1997-202630 years
1×16 Technic Brick3703
289
2955254
626315
16558
1977-202650 years
1×2 Technic Brick, 2-Pin Holes32000
142
6021129
1388131
22320
1996-202631 years
1×3 Technic Brick, 3-Pin Holes5565
1843
1151629
401882
42689
2024-20263 years
N
2×2 Technic Brick w/ Cutouts73109
603
1039508
313559
71551
2021-20266 years
1×1 Brick w/ Axle Hole73230
328
2748263
467409
16559
2021-20266 years
1×2 Brick w/ Axle Hole32064
83
896687
192184
27209
1997-202630 years
2×2 Brick w/ Grooves, Vertical Axle Hole90258
779
639685
250659
61827
2010-202617 years
2×4 Brick w/ Vertical Axle Holes39789
800
463824
154900
13792
2019-20268 years
4×4 Technic Frame, Open Center32324
910
411870
232687
52222
2000-202627 years
4×6 Technic Frame, Open Center32531
822
616698
246671
52217
2001-202626 years
6×8 Technic Frame, Open Center32532
692
671652
230691
101076
2001-202626 years
16×16×1⅓ Technic Plate (Art)65803
1801
1771347
202693
61868
2020-20267 years
5×5 Technic Brick, Corner32555
1103
402878
971177
52223
2001-202626 years
1×2 Brick, Pin 1-Side44865
266
2951255
814236
15607
1988-202639 years
1×2 Brick, 2-Pins, 1-Side30526
600
753601
296590
11965
2000-202627 years
2×2 Brick, Pin 1-Side6232
322
2285305
672292
14682
1985-202642 years
2×2 Brick, 2-Pins, 2-Sides30000
525
1182474
365500
91204
1995-202632 years
2×4 Brick, 2-Pins, 2-Sides6249
708
784589
251658
71557
1995-202531 years
2×4 Dbl. Inv w/ 2-Pins, Sides30390
2647
362761
272332
33367
2000-202122 years
2×4 Brick, Pin Top, Cutouts30592
998
2931043
175833
61846
2001-202626 years
2×4×1⅓ 2-Axle Holes, Cutout67446
1382
2401146
1201044
24045
2015-202612 years
2×6×1⅓ 2-Axle Holes, Cutout3668
1680
1891297
951195
15545
2020-20267 years
1×2 w/ 2-Liftarms85943
716
722624
303577
61822
2009-202618 years
1×6×1⅔ Slope w/ 3-Pin Holes2744
903
375908
1101089
13795
1988-202437 years
2×2 Round w/ 2-Pin Holes17485
514
816573
313561
18473
2015-202612 years
2×2×2 Robot Body w/ 2-Pin Holes30361
885
2801062
140946
15644
2000-202627 years
4×4 Round w/ 4-Pin Holes6222
626
638686
225701
15634
1995-202632 years
6×6 Round Brick w/ 5-Pin Holes18897
4304
153975
45379
42976
2015-202511 years
1×6×4⅓ Angled Brick w/ Cutout, 4-Pin Holes49699
2717
672115
172921
24121
2019-20257 years
1×5×3 Connector Block32333
1438
2051247
871256
33221
2000-202627 years

Plate

Studded LEGO plates with Technic pin or axle connections.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
2×4 Plate w/ 3-Holes3709
228
3625219
1042176
15605
1977-202650 years
2×6 Plate w/ 5-Holes32001
446
1377443
515377
11954
1992-202635 years
2×8 Plate w/ 7-Holes3738
360
1691380
619319
14685
1977-202650 years
4×4 Plate w/ Ø2 Rounded Corners, 9-Holes7864
5968
65595
45498
16454
20261 year
N
1×5 Plate w/ Rounded Corners, Axle Hole32124
398
1673384
492392
12851
1986-202641 years
3-Blade Rotor w/ Axle Hole32125
947
2921047
134981
11991
1986-202641 years
6-Blade w/ 6-Clips (Waterwheel)69984
2132
602210
332085
52327
2009-202618 years
1×2 Plate, 1-Pin Hole, Bottom18677
300
3015252
695276
12850
2015-202612 years
1×2 Plate, 1-Pin Hole, Top11458
197
3513225
964198
25253
2013-202614 years
1×3 w/ 2 studs, Hole Bottom3172
843
583717
133990
91218
2023-20264 years
N
2×2 Plate, 1-Pin Hole, Bottom10247
226
3717211
1106164
14679
1987-202640 years
2×2 Plate, 2-Pin Holes, Bottom2817
359
1768364
755252
11953
1989-202638 years
2×4 Plate, 2-Pin Holes, Bottom26599
1108
392893
198760
24029
2016-202611 years
1×2 Plate, 1-Pin Hole, Bottom32529
1162
2871053
1091096
52235
2001-202424 years
1×2 Plate, 2-Pin Holes, Top32530
379
1491423
603329
13766
2000-202627 years
2×4 Pin Hole Hinge, Top43045
901
487802
199759
52220
2012-202615 years
2×4 Pin Hole Hinge, Bottom43056
1102
2661086
1271014
61849
2012-202615 years
2×2 Plate, 1-Pin, Bottom2476
418
1562408
415454
14687
1988-202639 years
2×2 Plate, 2-Pins, Bottom15092
1401
2721077
991160
24038
2014-202613 years
2×2 Plate, 1-Pin, Top2460
307
1969338
935205
13761
1988-202639 years
2×4 Plate, 2-Pins, Ends40687
608
823569
347518
81356
1998-202629 years
2×2×⅔ Wheel Fork77598
3139
422593
222603
15700
2021-20266 years
2×2 Plate, 2-Pins, Wide47720
1364
2351161
132995
24048
2004-202623 years

Beam

Studless beams that can be connected using Technic pins and axles.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
1×1 Beam (Spacer)18654
186
5396145
848229
22323
2015-202612 years
1×2 Beam43857
407
1595396
402465
15612
2002-202625 years
1×2 Beam w/ 1-Axle Hole60483
207
4930157
733266
20391
2008-202619 years
1×3 Beam32523
138
6140126
1009189
32138
2000-202627 years
1×3 Beam w/ 1-Axle Hole7229
2433
532333
232531
42748
2025-20262 years
N
1×5 Beam32316
154
6034128
900215
29177
2000-202627 years
1×7 Beam32524
173
5163147
757251
30164
2001-202626 years
1×9 Beam40490
233
3801201
630310
23296
2001-202626 years
1×11 Beam32525
245
3473228
530364
26233
2001-202626 years
1×13 Beam41239
350
2220313
386483
20396
2004-202623 years
1×15 Beam32278
235
3660214
496387
30170
2000-202627 years
1×7 Beam w/ Alternating Holes2391
1275
2391148
561565
81381
2023-20264 years
N
1×9 Beam w/ Alternating Holes6612
3068
273119
123423
52437
2025-20262 years
N
1×11 Beam w/ Alternating Holes73507
1385
323983
661440
33202
2021-20266 years
1×15 Beam w/ Alternating Holes71710
1513
2171205
531621
42647
2021-20266 years
1×7 Beam, Bent (4-4)32348
424
1218467
345521
21366
2000-202627 years
1×9 Beam, Bent (6-4)6629
419
1465428
348516
18471
1996-202631 years
1×9 Beam, Bent (7-3)32271
396
1186472
326545
27222
1999-202628 years
1×11½ Beam, Double Bent32009
344
1824355
439436
23304
1997-202630 years
2×4 Beam, L-Shape32140
157
6014130
783243
31146
1999-202628 years
3×5 Beam, L-Shape32526
200
4537172
624317
29179
2000-202627 years
3×5 Liftarm, L-shape w/ Alternating Holes2477
1688
1871305
371948
42656
2023-20264 years
N
3×3 Beam, T-Shape60484
477
1634386
399473
91200
2009-202618 years
2×3 Beam, ¼-Ellipse71708
804
591710
981164
16570
2021-20266 years
2×5 Beam, ¼-Ellipse80286
1395
1431483
521635
101124
2022-20265 years
3×9 Beam, ¼-Ellipse3916
3680
263185
74321
33426
2023-20253 years
N
3×13 Frame, 1-Cross Beam4526
3362
422593
153084
15700
2024-20263 years
N
3×19 Frame, 2-Cross Beams67491
2012
971789
272312
52285
2022-20265 years
5×7 Frame, Open Center64179
780
736615
150912
91214
2009-202618 years
7×11 Frame, Open Center39794
1584
1571419
601517
42665
2019-20268 years
11×15 Frame, Open Center39790
2424
502398
252424
42758
2020-20256 years
11×19 Technic Frame (Baseplate)39369
4342
104610
64707
43045
2020-20234 years
3×5 Beam, H-Shape14720
1033
377906
138952
52226
2014-202613 years
5×11 Frame, H-Shape, Open Center64178
1774
1581415
881251
15555
2009-202618 years
3×3 Pin Connector Block39793
986
377905
931207
101090
2019-20268 years
7×16 Frame, A-Shape w/ Bars79768
3710
293040
64598
33404
2023-20253 years
N
Ø11 Frame, Round77107
3457
163854
93954
62107
2021-20244 years
Ø15 Frame, Round3250
3543
173775
93945
52493
2023-20264 years
N
4×2 Beam, L-Shape w/ 90° Offset11455
1642
1441476
551581
42672
2013-202614 years
2×3 Liftarm, U-shape3167
2217
891874
292209
33265
2024-20263 years
N

Thin Beam

A small selection of 'thin' beams which are ½ of the thickness of a standard LEGO Beam.

Panel

A selection of smooth elements to give Technic models and nicely finished appearance.

Panel Curved Panel

Technic panels that are curved or bent on a single axis.

Panel Fairing

Technic panels with complex shapes that are curved on multiple axes.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
#7 2×3 Fairing, Tapered, A. 2387
987
2991036
611497
20418
2023-20264 years
N
#8 2×3 Fairing, Tapered, B. 2389
981
3011032
621479
20417
2023-20264 years
N
#3 3×2 Fairing, Angled 22.5°2457
2023
632163
222587
101160
2023-20264 years
N
#21 2×5 Fairing, B.11946
574
656668
186805
25264
2013-202614 years
#22 2×5 Fairing, A.11947
568
652673
190785
26240
2013-202614 years
#10 3×3 Fairing, Tapered, Right2403
1498
981784
371953
15665
2023-20264 years
N
#9 3×3 Fairing, Tapered, Left2395
1512
961791
371954
15666
2023-20264 years
N
#2 3×5 Fairing, B87086
919
2321167
1231036
18500
2010-202617 years
#1 3×5 Fairing, A87080
900
2451130
1251026
18496
2010-202617 years
#4 3×7 Fairing, B64391
949
2081232
1231037
17544
2009-202618 years
#3 3×7 Fairing, A64683
929
2131215
1261021
18503
2009-202618 years
#6 3×11 Fairing, B64393
1018
1571416
941205
21384
2009-202618 years
#5 3×11 Fairing, A64681
1020
1551423
951197
21385
2009-202618 years
#41 3×11 Inv. Fairing, B5742
5073
85006
55070
24635
2024-20263 years
N
#40 3×11 Inv. Fairing, A5741
5072
85006
55070
24635
2024-20263 years
N
#14 5×7 Fairing, B64680
1465
951801
491707
13823
2009-202517 years
#13 5×7 Fairing, A64394
1471
951801
481732
13823
2009-202517 years
#18 5×11 Fairing, B64682
1375
931817
521642
17550
2009-202618 years
#17 5×11 Fairing, A64392
1372
941811
521641
17549
2009-202618 years
#60 5×7 Fairing, Tapered, Right80268
2650
223382
172958
91334
2022-20254 years
#61 5×7 Fairing, Tapered, Left80267
2649
223382
172958
91334
2022-20254 years
#62 5×4 Fairing, Tapered, Right80274
2330
372709
192777
101176
2022-20265 years
#63 5×4 Fairing, Tapered, Left80278
2374
372710
192777
91317
2022-20265 years
5×3×2 Fairing, Rounded, R.2442
3114
183683
113603
81526
2023-20264 years
N
5×3×2 Fairing, Rounded, L.2438
3019
213453
113586
81512
2023-20264 years
N

Connector

A wide range of parts with pin and axle connectors that can be used to connect Technic parts together.

Connector Axle

Standard axles and straight connectors with an axle connector on one end.

Connector Other Connector

Other connectors with a more complex shape.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
Bush3713
114
1473559
194683
81353
1977-202650 years
½ Bush32123
93
1618752
207376
101058
1980-202647 years
2L Axle Connector59443
101
939283
1542121
21350
2006-202621 years
3L Axle Connector42195
474
1789358
312564
11952
2016-202611 years
2L Pin Connector62462
104
6439123
1511123
30162
1995-202632 years
5⅓ Spiral Staircase Connector40244
1278
2071236
831289
61856
2001-202424 years
5L Axle Connector, w/out Friction 1-Side5443
3246
502403
74305
33323
2025-20262 years
N
Axle & Pin w/ Extension53586
1475
1751360
721390
42663
2006-202621 years
2L Axle & Pin, Perpendicular6536
121
878289
1028183
26230
1993-202634 years
3L Axle & 2-Pin Hole42003
230
4624167
704273
17514
2002-202625 years
3L 2-Axle & Center Pin32184
237
3759205
700275
20393
1999-202628 years
1×2 Beam w/ Bar, 45°85940
1424
2371157
1041129
24046
2009-202618 years
1×2 Beam w/ Axle, Side7244
2559
682106
172920
33287
2025-20262 years
N
1-Axle & Double Pin32291
349
1768363
443432
22333
2000-202627 years
1-Axle & 3-Pin63869
563
1569406
313558
61814
2009-202618 years
4L Axle & Double Pin98989
2171
931825
401885
24094
2012-202514 years
3-Pin, L-Shape44809
826
450836
153907
12869
2003-202624 years
2×4 2-Axle & 2-Pin80910
3690
183722
143225
24351
2021-20266 years
Split Axle & 2-Pin69819
405
1555409
444430
14688
2002-202625 years
2×2×2 Axle & Pin, Split92907
794
659664
222709
61826
2011-202616 years
2L Axle w/ Axle Hole (Reverser Handle)6553
335
1898345
693277
15610
1993-202634 years
2×3 4-Axle Connector11272
2140
771988
511663
24108
2013-202614 years
Axle & Axle Connector42135
172
4489173
1024185
26231
1997-202630 years
2-Axle Connector, Rubber45590
992
690641
268625
15501
2003-202624 years
Toggle Dbl. w/ 2-Pins48496
1831
1081681
551585
33246
2004-202623 years
Toggle Double w/ Axles & Pins87408
1425
2211196
1111086
24049
2010-202617 years
Toggle Joint Connector32126
609
1027512
224705
101070
1980-202647 years
3L Double Pin65098
579
884558
337531
91210
1999-202628 years
3L Pin, 2-Pins & 1-Pin Hole15461
997
565735
160884
33193
2014-202613 years
1×3 Cross Block w/ 2-Pins, 3-Pin Holes2393
1643
2201199
601512
24050
2023-20264 years
N
3L H-Shaped Connector w/ 4-Pins65489
746
1313451
326544
24015
2004-202623 years
1×3 Double Pin w/ 2-Clips19159
1900
1321539
521636
24075
2004-202320 years
3×3 L-Shaped Connector w/ 4-Pins55615
1282
393892
1001151
24028
2006-202621 years
2×2 Liftarm w/ Cutout, Axle Holes72008
2877
352803
192783
33372
2021-20266 years
3L w/ 2-Pin Holes32557
715
581718
188798
13785
2000-202627 years
3×3 Round Connector98585
768
514777
173838
12867
2012-202615 years
31mm D. × 15mm w/ 7-Pin Holes60208
614
640684
204749
18477
1986-202641 years

Gears

Bring models to life using gears and racks to create movement.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
8 Tooth10928
339
2414295
707272
11950
1977-202650 years
8 Tooth w/out Friction11955
4488
193662
74341
15872
2013-202513 years
12 Tooth69778
2342
1011753
391908
15586
2022-20265 years
12 Tooth, Bevel6589
413
2291303
548358
71546
1995-202632 years
12 Tooth, Dbl. Bevel32270
451
2104321
743260
42622
1999-202628 years
14 Tooth, Thick Bevel69762
3643
223417
93928
33462
2022-20265 years
16 Tooth94925
527
1757366
408461
52201
1979-202648 years
16 Tooth, Dbl. Clutch18946
1593
322985
721385
15526
2015-202612 years
20 Tooth69779
2534
851919
292213
15614
2022-20265 years
20 Tooth, Dbl. Clutch81346
3686
233370
172956
15817
2022-20265 years
20 Tooth, Bevel32198
1170
3081015
146929
33205
1999-202628 years
20 Tooth, Dbl. Bevel32269
586
1000516
403462
61819
1999-202628 years
20 Tooth Bevel w/ Pin Hole87407
1763
2201200
651453
15539
2010-202617 years
20 Tooth, Dbl. Clutch, Dbl. Bevel35185
2852
462484
312149
15679
2018-20258 years
22 Tooth, Thick Bevel69761
5117
104691
64707
16136
2022-20254 years
24 Tooth24505
453
1334448
484398
11956
1977-202650 years
28 Tooth, Dbl. Bevel46372
2476
592228
322108
24130
2019-20268 years
28 Tooth, Dbl. Bevel w/ Pin Hole65413
4655
124399
93990
16028
2020-20245 years
Differential Housing65414
3788
223439
153112
15828
2020-20256 years
28 Tooth, Differential62821
2106
931827
691420
15606
2008-202619 years
28-Tooth Turntable, Top99010
2102
1061705
611505
15581
2012-202615 years
28-Tooth Turntable Base99009
2086
1081683
621490
15578
2012-202615 years
60 Tooth Turntable, Top18938
2097
692094
471743
33286
2015-202612 years
60 Tooth Turntable, Base18939
2421
692098
471743
15640
2015-202612 years
36-Tooth, Dbl. Bevel32498
1520
1721368
831291
33228
2002-202625 years
40 Tooth3649
835
511780
164866
91220
1977-202549 years
1L Worm Gear27938
3140
402641
232542
15707
2017-20259 years
2L Worm Gear32905
743
522767
277613
81363
1985-202642 years
6L Worm Gear73763
2973
492430
163003
24144
2023-20264 years
N
2×2×1⅔ w/ Worm Gear Hole73764
4036
144102
113620
24435
2023-20253 years
N
6×6 15-Tooth ¼ Gear Ring78442
4056
183702
64626
33502
2021-20266 years
11×11 35-Tooth ¼ Gear Ring24121
2162
921832
172914
61914
2016-202611 years
4×4×1⅔ Gearbox6585
1528
1031734
891246
52279
1995-202632 years
2×4×3⅓ Gearbox6588
1898
722052
571558
42722
1995-202531 years
8 Tooth Gear w/ 1½L Axle24014
3282
402641
182842
15707
2016-202510 years
1×4 Rack3743
616
1185473
340526
52203
1977-202650 years
1×7 Rack w/ 2-Pin Holes & 2-Axle Holes87761
1904
1131644
911233
15573
2010-202617 years
1×13 Rack w/ 2-Pin Holes & 2-Axle Holes64781
2592
672118
332083
15641
2009-202618 years
1×14×2 Rack Housing18940
2777
273114
163028
62041
2015-20239 years
1×14×2 Rack w/ 4-Axle Holes & 7-Pin Holes18942
3439
332891
172938
15741
2015-202410 years

Link & Chain

A selection of parts to transfer power to a different area of the model.

Steering

Parts to assist with steering functionality.

Part Name(Part Number)
Overall
Rank
# Pieces(Rank)
# Sets(Rank)
# Colors(Rank)
Years
Produced
3×1 Steering Arm w/ Towball Socket5997
4239
263204
74321
15776
2025-20262 years
N
5×1 Steering Arm w/ Towball Socket31794
2241
931824
262368
33259
2014-202613 years
6×2 Steering Arm w/ Towball Socket57515
1903
1341529
381927
33238
2008-202518 years
2×2 Steering Arm w/ 2-Pins32069
1569
1461466
671431
42670
1998-202427 years
Steering Wheel Hub, 3-Pins92909
1795
1801334
481726
24059
2011-202616 years
Steering Hub Holder w/ 2-Pin Holes11950
2248
752014
322105
33279
2013-202614 years
Steering Hub Holder w/ Pin & Axle Holes65766
2743
642159
262376
15647
2016-202611 years
Steering Portal Frame92908
3538
442540
113555
15690
2011-202414 years
Steering Hub w/ Shock Socket69636
5395
75238
45467
24703
2022-20254 years
Rotation Socket w/ 2-Pins80563
1926
1291549
501678
24077
2022-20265 years
Ø3 Steering Wheel2819
940
2401144
204751
91238
1993-202634 years
Ø4 Steering Wheel2741
2105
502389
361997
61971
1988-202639 years
Steering Yoke40001
2288
472469
461762
33333
2001-202626 years
3L Universal Joint61903
1344
361929
138953
15521
2008-202619 years
Ø3 Rotation Disk w/ 3L Beam, Socket44225
1230
2641089
791320
61850
2003-202624 years
Ø3 Rotation Disk w/ 3L Beam, Plug44224
1363
2571102
721387
42641
2003-202624 years
Steering Arm w/ 3-Towballs, Pin Hole15460
2111
1131644
561572
15573
2014-202613 years
CV Joint, Ball32494
1913
1471462
451769
24066
2001-202626 years
CV Joint, Socket92906
2253
1031739
471741
15584
2011-202616 years
3L CV Joint, Ball52731
3347
432563
153081
15695
2019-20268 years
5L Sliding CV Joint, Ball77590
5060
114538
64692
16090
2021-20266 years
2L CV Joint, Socket4192
6549
65595
26700
16454
2023-20242 years
N
4L CV Joint, Socket52730
3670
303004
133307
15749
2019-20268 years
Disc Brake Hub w/ 3-Pin Holes35189
4317
183722
64626
24351
2018-20247 years
Ø6 Brake Disk w/ Axle Hole65416
4361
183740
93941
15882
2020-20256 years
Dbl. Ø3 Rotation Disk w/ 3L Beam, Plug5652
6031
75317
35963
16349
2024-20252 years
N
3×1 w/ Steering Socket65453
3944
213503
133331
15837
2011-202616 years
5×3 H-Shape w/ Steering Socket39370
5192
75238
55098
24703
2020-20256 years
5×4 C-Shape w/ Steering Ball65452
4376
163922
103763
15918
2011-202616 years

Engine

Parts to create an engine or implement a shifting system.

Mechanical & Pneumatic

Linear motion driven by gears or pneumatics.

Other Technic

Balls, propellers, and other hard-to-categorize parts.