This is a variable speed pulley set for the arbor spindle on the JWL1236 lathe.  These are only sold as sets. The ID is 24mm and the OD is 30mm.   The large OD is 132mm.This should be a slip fit so the pulley can slide on the shaft.  This is not a Jet part but it will get your machine up and running again. You will have to grind a small amount of the casting edge off as the OD is a little larger than the original part.   Shipping on this item is free via USPS or UPS.  I do ship internationally, just email me your location and I will quote shipping to your country.