... European market 3. Best quality 4. ISO9001-2008 Reach Jiayuan Timing Belt Pulley1.Material: Aluminium alloy, Carton steel, Cast iron, Stainless steel ... 10mm to 1000mm; 4. Pilot bore timing pulley MXL, XL,L and H; Pilot bore timing pulley T2.5, T5, T10, AT5 ... large scale production3. ISO9001-2008 qualified4. Production and management expertise timing belt pulley