Sturmey-Archer Indicator ChainsFits X-RD5 (HU2235) hub onlyFor identification purposes, two or three letter model codes are usually stamped on the hub shellItem SpecificationsFitsX-RD5 [w] , XL-RD5 [w] , X-RF5 [w] , S-RF5 [w] , X-RC5 [w] , S-RC5 [w] and S-RC5 [n] hubsIncludesIndicator Chain