B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
B24D7/18—Wheels of special form
B—PERFORMING OPERATIONS; TRANSPORTING
B24—GRINDING; POLISHING
B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor