Flexovit A1230H Bisco Tool Supply sells Metal Hog Grinding Wheels offer Superior Productivity, Higher Efficiency, and Longer Life. AXT24S - Rapid Grind are specifically toughened abrasive grain/bond formation. These grinding wheels provide an extremely high rate of stock removal and exceptional wheel life across a wide range of carbon and stainless steels. Grinding Discs - USA Abrasives 4-1/2"x1/4"x5/8-11 Flexovit Rapid Grind Depressed Center Grinding Disc for Metal, Stainless. Flexovit Industrial Abrasive Discs. Made in the USA by Flexovit High Quality Industrial Abrasive Products. Sold in box quantities of 10.