2GT AF Timing Pulley Type: AF form timing pulley Pitch: 2mmTeeth Number : 44T/45 teethOutside Diameter (OD): 12.22mmBore: 4/5/6/6.35/8/10/12/1.7/14/15mmFlange: DoubleMaterial: 6061 Aluminium AlloyFixed mode: 2* M3/4 Fit for Belt Wide: 6/10mmIf you want other items of wheels or belts, please touch me!