2GT 48T 50 Teeth Timing Pulley Bore 5-15mm Suitable for GT2 Transmission Gear 3D Printer Parts Synchronization Bandwidth 6/10mmTeeth Number : 48T/50 TeethBore: 5/6/6.35/8/10/12/12.7/14/15mmPitch: 2mmFit for Belt Wide: 6/10mmMaterial : Aluminum alloyColor:SilverIf you would like 2GT pulleys with diversified numbers of teeth, diversified bores or widths, and various shapes, please touch us, we are able to customize the specs you're convinced with!