Specification: Type: Wood Drill Bit Material:Tungsten Steel Shank diameter: 10mm Cutting edge diameter: 4mm-14mm Total length: 70mm rotation :Right hand Size : 4,4.5,5,5.5,6,6.5,7,7.5,8,8.5,9,9.5,10,10.5,11,11.5,12,12.5,13,14,15,16,17,18,19,20,22,25,30,35mm Suitable for: drill blind hole ,can be used in drilling machine or portable routers Package Including: 1pc Forstner Wood Drill Bit Notes: Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.