These buffing mandrels are 1/4 inch and also adapt to fit 3/8 inch and 1/2 inch arbor holes. Includes 3/8 and 1/2-inch bushing.
1/4 inch mandrel
3/8 inch bushing
1/2 inch bushing
1/4 inch mandrel
3/8 inch bushing
1/2 inch bushing