Supplied in the following major brands: Dunlop & Challenge. We offer a wide range of T5 aluminium pulleys with a pilot bore. Made from Aluminium with Zinc plated steel flanges, our range of T5 pulleys are designed to suit 10mm wide timing belts. Sizes range from 21-T5-12 - 21-T5-60, other sizes may also be available but may not be displayed please contact us if you require a size not displayed on our shop.