ITEM NAME:Stepper Motor 10 Teeth 6mm Bore XL Type Aluminum Timing Belt Pulley JR Used widely in milling machine, CNC engine lathe, gear shaper, hobbing machine, drilling machine or other machinery transmission occassions. Product Name : Timing Pulley; Type : XL10; Number of Tooth : 10T Pitch : 5.08mm/1/5''; Bore Diameter : 6mm Top Diameter : 12mm/0.47" Fit Belt Width : 11mm/0.43" Materials : Aluminum; Color : Silver Tone Package Content : 1 x Timing Pulley.Used widely in milling machine, CNC engine lathe, gear shaper, hobbing machine, drilling machine or other machinery transmission occassions. Fit Belt Width : 11mm/0.43". Materials : Aluminum;.