Timing Belt Pulley Aluminum 35 Teeth 12mm Bore Toothed Belt Wheel For Tension Roller 12mm Bore Pulley For 3D Printer It is very useful in high-reduction drives in the occasion that need to improve the wrap-around capabilities of belts. 10.49 Uxcell 3M15 Teeth Timing Pulley Synchronous Wheel Belt Drive Gear with M3 Screw 8mm Bore for Belt, 3D Printer, CNC Used widely in milling machine, CNC engine lathe, gear shaper, hobbing machine, drilling machine or other machinery transmission occassions. Timing Pulley Set 12mm Pitch Pulley 25Teeth Bore 30mm, Wheel 40Teeth... Specifications:Material: AluminumTeeth: 35TBore: 12mmFeatures:Suits to the timing belt which is 6mm width. 3D Printer Timing Belts & Pulleys – tagged New Arrivals – Page 2 Package Content:1 X MXL 12mm Bore Timing Pulley