Technical Specification Item Straight Grinding Wheel Type Type 1 Wheel Type Toolroom Diameter 12 Thickness 1 Arbor Size 5 Abrasive Material Aluminum Oxide Bond Type Vitrified Grit 46 Grade Coarse Hardness Medium (K) Max. RPM 2070 Color Purple Application For Iron, High Speed Steel and Tool Steels RC 50 to 68, 300 and 400 Series Stainless Steels, Soft Steels RC 30 to 45 Series 32A Specification 32A46-KVBE Compliance & Restrictions Compliance and Restrictions This listing is for each. _DELETE_