• Premium aluminum oxide grain for excellent cutting on carbon steel • Advanced formulation for free cutting; maximizes the performance of conventional aluminum oxide abrasive • Heavier side reinforcing for severe jobs where durability and wheel life are most important • Reinforced for use on high-speed portable grinders • Made in the USA • The Norton small diameter Type 01 cut-off line consists of Type 01 straight wheels from 1-1/2 In.-6 In. diameters. These wheels come in ultra thin 0.035 In. for quick burn/burr free cutting to 1/8 In. for more durable applications. All are reinforced for the demanding nature of portable cut-off.