Metabo WEV15-125 Quick Lock-On 13.5 Amp 2,800-11,000 rpm Angle Grinder with Electronics, 5" Metabo LongLife motor with up to 50% more torque for quicker material removal, up to 20% higher overload capacity Electronic Variable Speed dial to match the RPM of the tool to the requirements of the application 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 Electronic overload protection which helps protect the tool from overheating in demanding applications providing long service life