Flexovit A1236 Bisco Tool Supply Sells Flexovit USA Made Depressed Center Type 27 Grinding Wheels for Metal and Stainless Steel. Grinding Discs - USA Abrasives 4-1/2"x1/4"x7/8" Flexovit Grinding Disc for Metal, Stainless, Fast Grind. Flexovit Industrial Abrasive Discs. These are made in the USA by Flexovit High Quality Industrial Abrasive Products. High Performance Grinding Wheels offer High Productivity, Versability, and Durability. A30S - Fast Grind offers Agressive grinding with a good wheel life. Ideal for most metals, including stainless and other hard alloys. An excellent "all purpose" spec.