Bisco Tool Supply sells Grinding Wheels - USA Abrasives 7"x1/4"x5/8-11 Flexovit Free Grind Depressed Center Grinding Wheel for Stainless Steel and Alloy Metals. Provides a Smooth and Fast Grind. Flexovit Industrial Abrasive Wheels. Made in the USA by Flexovit High Quality Industrial Abrasive Products. Sold in box quantities of 10.