XL-24T Timing Pulley with Keyway 24Teeth XL Toothed Pulleys 8/10/12/14/15/16/20mm Bore 11mm Belt Width Transmission Gear PulleyName:XL-24T timing pulleyModel:XL TypeTeeth Number:24TTeeth Pitch:5.08mmInner bore:Bore 8mm Keyway 3*1.4mm;Bore 10mm Keyway 3*1.4mm;Bore 10mm Keyway 4*1.8mm;Bore 12mm Keyway 4*1.8mm;Bore 12.7mm Keyway 5*2.3mm;Bore 14mm Keyway 5*2.3mm;Bore 15mm Keyway 5*2.3mm;Bore 16mm Keyway 5*2.3mm;Bore 17mm Keyway 5*2.3mm;Bore 18mm Keyway 6*2.8mm;Bore 19mm Keyway 6*2.8mm;Bore 20mm Keyway 6*2.8mm;Belt Width:11mmTotal Height:15mmType:Bore with keywayScrew:2*M5Material:Aluminum alloyPackage:1pc timing pulley