Fits campagnolo chorus and record oversized axle hubs from 1999 till present day and a number of Campagnolo and fulcrum wheels. Check the campagnolo and fulcrum spare parts catalogue to be sure.
FH-RE126 is the part number
This does not fit fulcrum racing 4 or Campagnolo Scriocco or Khamsin wheels. The latter two use FH-SC004 which I stock.