Norton 4-1/2" Type 27 CeramicDepressed Center Wheels, 7/8" Arbor, 1/4"-Thick, 13, 580 RPM

The Quantum3 depressed center grinding wheel combines a ceramic alumina abrasive grain and an innovative bond system and lasts about five times longer than aluminum oxide wheels, while providing twice the performance and longevity of other ceramic wheels. Intended for offhand stock removal on cast iron and gray iron with a rugged design for outstanding toughness. The high performance level of this wheel helps cut down on labor costs when working on demanding foundry jobs.