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Simple Machines (9975-1) is a Technic LEGO set released in 1987 with 122 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Technic sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 14 unique part types.
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Parts in this set
14 parts · updating…
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Plate 1 x 43710 · ×16 · Red -
Technic Axle 123708 · ×4 · Black -
Technic Axle 43705 · ×4 · Black -
Technic Axle 63706 · ×6 · Black -
Technic Axle and Pin Connector3651 · ×8 · Light Gray -
![Technic Brick 1 x 12 [11 Pin Holes]](https://cdn.rebrickable.com/media/parts/elements/389523.jpg)
Technic Brick 1 x 12 [11 Pin Holes]3895 · ×8 · Blue -
![Technic Brick 1 x 2 [1 Pin Hole]](https://cdn.rebrickable.com/media/parts/elements/370023.jpg)
Technic Brick 1 x 2 [1 Pin Hole]3700 · ×12 · Blue -
![Technic Brick 1 x 8 [7 Pin Holes]](https://cdn.rebrickable.com/media/parts/elements/370223.jpg)
Technic Brick 1 x 8 [7 Pin Holes]3702 · ×8 · Blue -
Technic Bush3713 · ×4 · Light Gray -
![Technic Gear 24 Tooth [Old Style - Three axle holes]](https://cdn.rebrickable.com/media/parts/ldraw/7/3648a.png)
Technic Gear 24 Tooth [Old Style - Three axle holes]3648a · ×12 · Light Gray -
Technic Gear 24 Tooth Crown with Flat Teeth3650a · ×4 · Light Gray -
Technic Gear 8 Tooth3647 · ×12 · Light Gray -
Technic Pin without Friction Ridges Lengthwise3673 · ×8 · Light Gray -
![Technic Plate 2 x 4 [3 Holes]](https://cdn.rebrickable.com/media/parts/elements/370921.jpg)
Technic Plate 2 x 4 [3 Holes]3709 · ×16 · Red