Aluminum body with composite housing to insulate from cold; Fast rundown 280 RPM; Short & Wide lever; Back exhaust avoids blowing dirt and dust; New power easy-to-use regulator to regulate speed from zero to max speed; Flat forward and reverse button; Improved head material; Head composite protective cover supplied with the tool; Shank with ball retainer; 1.1 lbs. – 0.5 kg