Norton 1A6A7 MULTI POINT DIAMOND TOOL

3/4 INCH SHANK LENGTH; MULTI-POINT NIB DRESSER TYPE; DIAMOND DRESSER MATERIAL; 1/4 INCH X 5/16 INCH X 3/4 INCH DRESSER SIZE; 1A NIB SHAPE; A SHANK TYPE; 7/16 INCH SHANK SIZE; 21 INCH GRINDING WHEEL DIAMETER