Ideal for metal cutting, metal abrasion, body work, metal fabrication and general repair work. Used on ferrous materials. Aluminum oxide metal cutting wheel. Designed to be used on die and air grinders only. Product Specifications: Wheel size: 3" (76.2 millimeters) Thickness: 1/16" (1.59 millimeters) Wheel type: Type 1 (flat) Arbor: 3/8" (9.53 millimeters) Spec: A46T-BF Maximum revolutions per minute (RPM): 25,465 Tool type: Die and air grinders