Features: 1.Poweful 550-watt motor,effectively removes defects quicker. 2.Soft start with constant speed system. 3.Ergonomic design,the Non-Slip soft rubber coated grip makes the head and the handle pleasant and secure to hold. 4.Electronic speed control dial,large numbers,click sensation to indicate speed changes. 5.Progressive switch trigger,the trgger can control speeds and 6 speed setting. 6.Removable wire mesh intake covers design.They help to prevent wool fiber,compound dust,polish from entering the motor and causing damage. 7.CNC machined steel counterweight. 8.Head cover makes heat emussion holes design.