Bosch 1974-8D 7-Inch Large Angle Grinder without Lock On Best in class power-to-weight ratio - lowest weight of any 4-Hp large angle grinder New vibration control Side and Main Handles - 50-Percent vibration Reduction 8,500 RPM- optimized for 7-Inch wheels - up to 20-Percent longer wheel life than 6,000 RPM New power coated stator and epoxy coated windings - ultimate protection against dust and debris Dead-man switch - now red in color to ease osha inspections