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Amazon.com: KonHaovF 182PCS Gear and Axle Set for Technic Parts Compatible with Major Brand Technic Parts, DIY Gears Assortment Pack(Liftarm, Pins, Axles, Connectors) for Technic Building Blocks Set : Toys & Games
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LEGO pin and axle standard - LEGO Technic, Mindstorms, Model Team and Scale Modeling - Eurobricks Forums
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Amazon.com: LEGO Parts and Pieces: Technic Dark Gray (Dark Stone Grey) 1x2 Brick with Hole x100 : Toys & Games
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Amazon.com: LEGO Parts and Pieces: Technic Dark Gray (Dark Stone Grey) 1x1 Brick with Hole x20 : Toys & Games
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