The ENGRENAGES HPC offers a comprehensive range of pulleys including Heavy duty timing pulleys (HTD), made out of aluminium, steel or cast iron, with pitch from 3 to 14 mm (based on the material used) and belt widths of 9, 15, 20, 25, 30, 50, 55 and 85 mm (based on pitch) designed for sue with RPP and HTD type belts. The Timing pulleys (T) are manufactured out of PA6 nylon or aluminum with pitch from 2.5 to 10 mm (based on material) and belt widths of 4, 6, 10, 16 and 25 mm (based on pitch), designed for use with type T belts. the Timing pulleys (AT) are made out of aluminum or steel and feature a pitch from 5 to 10 mm (based on material) with belt widths of 10, 16, 25, 32 and 50 mm (based on pitch). They were designed for use with AT type belts. These units are also available with a wide range of accessories including: RPP belts, T belts, AT belts, Open belts, belt clamping plates, tension rollers and tension arms.