OPERATOR'S MANUAL GRINDING KIT, VALVE SEAT, ELECTRIC, …
Operator's Manual GRINDING KIT, VALVE SEAT, ELECTRIC, 35 DEGREE ANGLE CONCENTRIC DRIVE DRIVER, AC/DC, 115-VOLT 7,500 RPM RATED NO LOAD SPEED (ALBERTSON AND COMPANY MODEL 1712-M) ... SIOUX valve seat grinding wheels because you can dress each side to a different angle-for Instance 45° end 30° . For