※Function: Spindle Tapered Threaded Adapter with 5/8"(16MM) arbor hole uses on 5/8" shaft motor or grinder. 5/8" Right & Left Spindle Adapter for 8" Bench Grinder. Used on 8" bench grinders to convert your bench grinder into a polishing machine, they are held in place by hollowhead screws.
eBay