2GT Timing Pulley Model K+BFType: A variety timing pulley 40T+80T-2GT-10mm Pitch: 2mmTeeth Number : 40+80T teethBore: 5/6/8/10/12mmFlange: DoubleMaterial: 6061 Aluminium AlloyFixed mode: 2* M4Fit for Belt Wide: 10Belt length:250mm、300mm、320mm、360mm、380mm、400mm、450mm、500mm、600mmIf you like different items of wheels or belts, please contact me!