14mm Bore Aluminum Timing Pulley 3mm Pitch 28 Teeth 15mm Wide Belt Groove for 3D printer HTD3M14mm Bore Timing Pulley for 3D Printers 28 Teeth HTD 3M with 15mm Belt Width Groove This aluminum timing pulley is built for 3D printers and CNC setups using a 14mm shaft and a 15mm wide HTD 3M timing belt. With a solid grip and two set screws, it's great for precise motion control on stepper motors. Bore Size: 14mm Tooth Count: 28 Teeth Pitch: 3mm (HTD 3M) Belt Width Compatibility: 15mm Material: Aluminum Includes 2 set screws for secure shaft