Custom made in the USA by Trent Rudat By far the nicest wheel on the market!! 4" wheel includes arbor that was machined specifically for each wheel Arbor fits 5/8" shaft An adapter sleeve will make it useable on a 1/2" shaft but not as accurately as a 5/8" shaft, if you need the sleeve, please email me You will need to cut your own paper for this wheel as it's a traditional French wheel and not the thinner J.Alan design, the paper we carry will not fit this wheel