Name: HTD 8M Timing PulleyMain Material: Aluminum AlloyType: BF TypeTeeth Pitch: 8mmBelt Width: 25/30/40mmGroove width: 27/32/42mmTeeth Number:18T 20TBearing Bore : 8/10/12/12.7/14/15/16/17/18/19/20/22/24/25/28/30mmKeyway Bore:8mm-keyway 3mm10mm-keyway 3mm10mm-keyway 4mm12mm-keyway 4mm14mm-keyway 5mm15mm-keyway 5mm16mm-keyway 5mm17mm-keyway 5mm18mm-keyway 6mm19mm-keyway 6mm20mm-keyway 6mm22mm-keyway 6mm24mm-keyway 8mm25mm-keyway 8mm28mm-keyway 8mm30mm-keyway 8mmPack Quantity:1pcs