HITACHI ANSI Roller Chain is standing on JIS B 1801. The uniqueness includes SBR ( Solid Bushing & Roller) having no seam on bushing and roller which creates outstanding character against initial elongation and wear. HITACHI SPROCKET, HITACHI METAL TECHNOLOGY, HITACHI COUPLING, HITACHI ROLLER CHAIN STAINLESS STEEL, HITACHI STANDART BRITISH, HITACHI STANDART ANSI HITACHI CHAIN RS 40 HITACHI CHAIN RS 50 HITACHI CHAIN RS 60 HITACHI CHAIN RS 80 HITACHI CHAIN RS 100 HITACHI CHAIN RS 120 HITACHI CHAIN RS 140 HITACHI CHAIN RS 160 HITACHI CHAIN RS 180 HITACHI CHAIN RS 200 HITACHI CHAIN RS 40 DOUBLE HITACHI CHAIN RS 50 DOUBLE HITACHI CHAIN RS 60 DOUBLE HITACHI CHAIN RS 80 DOUBLE HITACHI CHAIN RS 100 DOUBLE HITACHI CHAIN RS 120 DOUBLE HITACHI CHAIN RS 140 DOUBLE HITACHI CHAIN RS 160 DOUBLE HITACHI CHAIN RS 180 DOUBLE HITACHI CHAIN RS 200 DOUBLE - See more at: http: / / www.agenchainbeltpulley.com/