Forney Metal Cut-Off Wheel 4-1/2 in. Dia. *Product Type: Metal Cut-Off Wheel *Diameter: 4-1/2 in. *Thickness: .040 in. thick *Arbor Size: 7/8 in. *Packaging Type: Bulk *Abrasive Material: Aluminum Oxide *Compatibility: Right Angle Grinders*Grit: A60T-BF *Maximum Speed: 13,580 rpm *Feature 1: Maximum RPM 13580 *Type 1* Designed for metal cutting, metal abrasion, body work, metal fabrication and general repair work * Used on ferrous materials *Discovery ACC