Dynabrade 52632 4-1/2-Inch 114 mm Diameter Right Angle Depressed Center Wheel Grinder, 1.3 HP, 12000 RPM, Side Exhaust, 5/8-Inch 11 Spindle Thread 1.3 hp Depressed Center Wheel Grinder is ideal for fast weld and stock removal, heavy deburring, plus rust and scale removal 12,000 RPM, 5/8-Inch-11 Spindle Thread Tool accepts optional 4-1/2-Inch (114 mm) diameter Type 27 Depressed Center Wheels with 7/8-Inch (22 mm) center hole Includes 25212 Wheel Guard, 25262 Backup Flange and 53696 Locking Flange Tool also accepts optional 4-1/2-Inch (114 mm) diameter Abrasive Flap Discs (flanging sold separately). Vibration Dampening Side Handle included