Bosch 1994-6D 9-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 New burst wheel resistant guard - completely tool free! Contains wheel in event of bursting New power coated stator and epoxy coated windings - ultimate protection against dust and debris Rotating main handle - always in correct position regardless of application - also features dead-man switch - now red in color to ease osha inspections