Metabo W9-115 Quick 8.5 Amp 10,500 rpm Angle Grinder with Lock-On Sliding Switch, 4-1/2" Metabo LongLife motor with up to 50% more torque for quicker material removal, up to 20% higher overload capacity and 30% more protection against dust Suitable for AC/DC operation Metabo S-Automatic safety slip clutch helps the user to maintain control if the accessory jams reducing the likelihood of kickback Metabo Quick System: the fastest tool-free disc change system at the touch of a button Tool-free adjustable guard with 7 locking positions