Constant Pinion Belt Pulley 3M15T Pitch 3.0mm Circular Tooth Alloy Pulley Bore 4/5/6/6.35mm 1Pcs Number of Teeth : 15 Model Number : 3M15Teeth Material : Alloy Type : Timing Teeth Pitch : 3.0 mm Teeth Shape : Circular Tooth Belt Width : 6/10/15 mm