Specification:Name: Black 45# Steel HTD3M Timing Pulley Synchronous WheelMaterial: 45# Steel Surface Treatment: Blackening and Anti-rust TreatmentType: AF TypeTeeth Pitch: 3mmTooth Shape: Arc ToothTeeth Number: 24 25 TeethRound Bore: 4/5/6/6.35/8/10/12/12.7/14/15mmKeyway Bore:8mm-keyway 3mm10mm-keyway 3mm10mm-keyway 4mm12mm-keyway 4mm12.7mm-keyway 5mm14mm-keyway 5mm15mm-keyway 5mmSlot Width: 11/16mm (suitable for timing belt width 10/15mm)Bore Tolerance: 0.01-0.02mmApplication:Suitable for transmission componentsNote:Due to different batches, the scale of the timing wheel flange can be 2-3mm different, for the installation of sufficient space does not influence the use of equipment, the specific object shall prevail.Package:Packing : Plastic bag / Carton box.Quantity : According in your Choose!