Bench Grinding Wheel, Vitrified bond, aluminum oxide wheel. Designed for most stationary bench grinders. For general grinding and sharpening applications on mild steel. Not for carbide applications. Wheel Size: 6. Thickness: 3/4. Arbor: 1. Grit: 60. Max RPM: 4,100. Tool Type: Bench Grinder. Designed for most stationary bench grindersFor general grinding and sharpening applications on mild steelVitrified bond * For general grinding and sharpening applications on mild steel *Not for carbide applications