Makita Die Grinder GD0800C 1 4 Inch SJS Variable Speed Tool (6.6 AMP 28000 RPM Electronic Regulation Metal Porting Weld Deburring Fabrication) Wood Working Ruggedized Drop Shielding: Reinforced high impact Ruggedized Drop Shielding: Reinforced high impact ABS housing configuration absorbs heavy field impacts Three Modes of Operation: Includes Rotary Hammer Engineered with Makita’s proprietary Super Joint System (SJS™)—a mechanical slip clutch mechanism protecting gears and armature shafts if the grinding point binds—this high performance corded tool incorporates electronic speed control to maintain constant RPM under load and soft start technology for smooth start ups Outfitted with an electronic current limiter for overload protection