Reflex Abrasives Grinding Wheels Standard issue, economical grinding wheel. Virgin aluminum oxide grain assures consistent high stock removal for tough applications. All sizes are made with uniform grain throughout, no filler grain used in the backing. All wheels internally reinforced with the highest quality fiberglass for maximum safety. This grinding wheel is suitable for steel, but not stainless. Options Available: RX116.00.25 – A24R – 4 ½” x 1/4” x 7/8” RX126.00.25 – A24R – 5” x 1/4” x 7/8” RX176.00.25 – A24R – 7” x 1/4” x 7/8” RX236.00.25 – A24R – 9” x 1/4” x 7/8” RX113.00.25 – A30S – 4 ½” x 1/8” x 7/8” RX123.00.25 – A30S – 5” x 1/8” x 7/8” RX173.00.25 – A30S – 7” x 1/8” x 7/8”