Forney Metal Cut-Off Wheel 4-1/2 in. Dia. *Diameter: 4-1/2 in. *Arbor Size: 7/8 in. *Material: Aluminum Oxide *Product Type: Metal Cut-Off Wheel *Number in Package: 1 pc. *Thickness: .045 in. *Packaging Type: Bulk *Usage: Designed to be used on right angle grinders only *Maximum Speed: 13580 rpm *Compatibility: Right Angle Grinders *Type 1 *Designed for metal cutting, metal abrasion, body work, metal fabrication and general repair work * Used on ferrous materials