A2230 Flexovit 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 Wheels - USA Abrasives 5"x1/4"x7/8" Flexovit Rapid Grind Depressed Center Grinding Wheel for Metal, Stainless. Flexovit Industrial Abrasive Wheels. Made in the USA by Flexovit High Quality Industrial Abrasive Products. Sold in box quantities of 25.