ITEM NAME:8mm Bore 10 Teeth 10T Metal Pilot Motor Gear Roller Chain Drive Sprocket FT 8mm Bore 10 Teeth 10T Metal Pilot Motor Gear Roller Chain Drive Sprocket Finishing metal sprocket, Widely used in hardware, molds, and the occasion of the mechanical Specifications: Materail: 45 # Steel Bore Diameter: 8mm Teeth Number: 10 Pitch: 6.35mm Overall dimensions: 15mm x 25mm Package contains: 1 x metal sprocket.Teeth Number: 10.