The Dewalt DCG405 Brushless Angle Grinder has a no load speed of 9000rpm and a 125mm disc diameter. Sold as a bare tool without battery or charger. 18V Brushless motor for efficiency, improved application performance and power Capable of x69 cuts in 1/2" steel rebar when used with 5.0Ah battery (sold separately) Compact gear case for increased access to tight spaces and gives excellent cutting depth Slide switch provides less user fatigue. Built in no-volt release gives protection against accidental start ups when new battery is installed Electronic brake has braking time of < 2 seconds when the trigger is released to help reduce accidental contact and injury Constant Clutch and E-Clutch protects from kickbacks, cuts and wheel bursts Mesh Covers restricts dust being sucked through.