Ferny.. The nearest thing to herald bearings is the TR 2 to 6 fronts. They use exactly the same bearing as herald, spit.. TR enterprises sell the ones for the TRs.. I would imagine that like the 2000 spacers to GT6 ... that the TR to Herald will be slightly too long.. BUT... too long is good, you can lathe them down to suit your hub.. I was thinking of producing the Herald/spit spacers..... But i can only deal with a few projects at a time.. James