The 6089-31 7 inch / 9 inch 15.0 amp ROTO-LOK® - large angle grinder (no lock-on) delivers performance and durability for the most difficult grinding jobs. The 15 amp, 4.2 HP motor provides high overload protection and power for the toughest jobs. 9 position rotating main handle makes it easier to control the grinder in all orientations. The tool-free burst resistant guard allows the user to quickly adjust the guard without the use of a tool. Both a 7 inch and 9 inch type 27 grinding guard are included for greater productivity.