This is a A-62H 62H Steel Detachable Chain (10 ft) PN: 62HMain Description As Following : A-62H 62H Steel Detachable Chain (10 ft) P.N: 62H Dim A (1): 1-7/8Dim B (2): 63/64Dim C (3): 1-21/32 Crossed From: 042-T6300 , , 042T6300 , , 2221-23821 JOHN DAY Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Steel Detachable Chains, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 1-7/8 Dim B (2): 63/64 Dim C (3): 1-21/32