Cqg Plastic Diy Robot Gear Kit Gearbox Motor Gear Set (78 Pcs)The 78Pcs Plastic Gear Set For All Kinds Of Diy Cars, Robots, Model Making Accessories. Package Includes Main Shaft Gear, Singledouble Gear, Crown Gear, Pulley, Rack, Bevel Gear, Copper Gear, Bushing, Axle, Tire, Rubber Band,Etc. The Most..