METAL GRIND DISC 4-1/2"D *Brand Name: Diablo *Diameter: 4-1/2 in. *Arbor Size: 7/8 in. *Material: Aluminum Oxide *Product Type: Metal Grinding Disc *Number in Package: 1 pc *Packaging Type: Bulk *Compatibility: Angle Grinders *Maximum Speed: 13280 rpm *Thickness: 1/4 in. *Arbor Type: Type 27 - Depressed Center *Discovery SUP