The most powerful one with full 1,900 Watt for industrial processing of weld seams and a cutting depth like a large angle grinder (à 230 mm) with only half the weight Perfect ergonomics thanks to slim handle for maximum control and easy working overhead Metabo Marathon-motor with new cooling and carbon brush system for twice the service life Tacho Constamatic (TC) Full-wave Electronics: fast work progress by means of constant speed under load M-Quick System for tool-free disc change at the touch of a button Tool-free adjustable guard; twist-proof Reduced vibrations for low-fatigue working thanks to Metabo VibraTech (MVT) side handle and integrated Auto-balancer Highest degree of user safety thanks to patented, mechanical disc brake and deadman's switch: disc stop in 2 seconds after releasing even in case of a power cut Metabo S-automatic mechanical safety clutch: minimises kick-back to the lowest level when the disc jams unexpectedly - for maximum user safety and swift progress Electronic soft start and restart protection Gear housing can be unscrewed, rotated in 90° steps and remounted for left-handed operation or cutting Auto-stop carbon brushes to protect the motor.