Pool Robot -Plastic Gears,Compatible Plastic Gears,Cog Wheels DIY,Gears Worm DIY,Gears DIY Robot,diy gear,gear toy,diy gear,gear construction,gear tool,gear model,gear robot Plastic Gears,Compatible Plastic Gears,Cog Wheels DIY,Gears Worm DIY,Gears DIY Robot,gear diy,gear toy,gear diy,gear construction,gear tool,gear model,gear robot Description: 100% brand new and high quality . DIY model machine accessories, kids tool accessories, best DIY accessories. It is included gear and rubber band, mix color gears in the bag. A variety of sizes and styles, you can choose the size you want. Plastic material. specification: Size: Gears diameter about 0.5-6cm Rubber band diameter about 1.5-4cm Rack: (L) x (W): 12.5 x 0.7cm Package includes: 1 set gear bag (mix color)