The Package Listing Includes as Follow: 5mmx50mm Grind Flat shaft---1pcs GT2 Belt closed loop(6mm wide)-188mm---1pcs(GATES)GT2 20T Pulleys (6mm wide, 5mm bore)---2pcsF695 2RS bearing---2pcs if You Need Other Size of Pulley,Please Contacter With us,Our Factory Can customized...