RADNOR™ A24R Type 27 Depressed Center Combination Wheel measuring 4" X 1/8" X 5/8" is an ideal right angle grinder that provides consistent versatile quality by featuring aluminum oxide grain contraction. 4" Dia wheel that offers maximum RPM of 15280 is ideally suited for on-site and small unit jobs like cutting-off, notching and light side grinding. Durable wheel is used on grinding alloys, steels and ferrous metals while providing ultimate results on stainless steel. Wheel features free cutting to provide consistent quality.