Technic, Gear Worm Screw with 2 Bushes

Technic, Gear 8 Tooth with Dual Face

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Technic, Gear 8 Tooth with Dual Face without Friction

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Technic, Gear Rack 1 x 14 x 2 Housing

Technic, Gear Rack 1 x 14 x 2 Housing with Black and Yellow Danger Stripes Pattern Front Side (Sticker) - Set 42078