Master Palm® Pneumatic.
Those 3" grinding wheels are 5/32" ( 4mm ) thick with 3/8" arbor hole. Fit for pneumatic air grinders using 3" grinding wheel with 3/8" arbor fitter.
*Sold as 5 pcs in a pack.
*Ship within 5 business days
Master Palm 3 inch Grinding Wheel 5 pcs Pack