Lego Technic Axles | 3D CAD Model Library | GrabCAD
Amazon.com: LEGO 10pc Technic axle Set (3M 6M 8M 10M 12M Mindstorms nxt Robot Gear) : Toys & Games
Amazon.com: KonHaovF 116PCS Gear and Axle Set for Technic Parts Compatible with with Major Brand Technic Parts, DIY Gears Assortment Pack(Gears Pins Axles Differential New) for Technic Building Blocks Set : Toys