Forney Depressed Center Backplate 7 in. Di *Diameter: 7 in. *Thickness: 1/4 in. thick *Arbor Size: 5/8 in. *Product Type: Depressed Center Backplate *Number in Package: 1 pc. *Compatibility: Angle Grinders *Maximum Speed: 13700 rpm *Packaging Type: Bulk *Mounts 7" and larger Type 27 depressed center wheels without arbor to 5/8"-11 angle grinder shaft *Discovery Regional