This is a A-AL667HCO AL667H-CO Connector Link PN: AL667HCOMain Description As Following : A-AL667HCO AL667H-CO Connector Link P.N: AL667HCO Dim A (1): 1.5" ID wide endDim B (2): 1.125" ID narrow endDim C (3): 2.313" pitchDim D (4): 5/16" Pin Crossed From: 2221-49821 JOHN DAY Found in Section & Models : Chains/ Sprockets/ Pulleys/ Hubs > Pintle Chains, (Miscellaneous) (UNDEFINED): SEVERAL Associated Items : New Also This is An Aftermarket Product And : Dim A (1): 1.5" ID wide end Dim B (2): 1.125" ID narrow end Dim C (3): 2.313" pitch Dim D (4): 5/16" Pin