PSA (pressure-sensitive adhesive) discs are suited to grinding larger surfaces.
.6" Diameter PSA Disc - Aluminum Oxide - 36 Grit For universal grinding work from coarse to fine grinding in industry and professional trades. With the disc holder, PSA discs can be used on commercially available, variable speed or slow-running angle grinders with a 5/16-24 UNC thread. The flexible system includes a PSA disc and associated holder for use on contours.