This is a high quality aluminum GT3 timing pulley that is perfect for your automation projects! It has more aggressive teeth than it’s little brother the GT2 so this can be used in higher torque applications. This pulley has a 6.35mm (1/4″) bore size which fits the Nema 23 Stepper Motors. GT2 (3mm) 20 Tooth Aluminum Up to 6mm/1/4″ belt width 6.35mm Bore 2 flanges with hub Set screws included (1.5mm) Pulley Diameter 18.3mm ID 6.35mm(bore) H 17.6mm Overall OD 26mm Use with GT3 Belt sold by the meter.
