Unique clutch assembly helps protect the gears should the blade bind. Long 1-1/4" stroke for faster cutting. Anit-Vibration Technology (AVT) 2X less vibration with counter balance system. 4-position orbital/straight cutting action. Powerful 15 amp motor with electronic speed control maintains constant speed under load. Tool-less blade change and shoe adjustment. 0-2800 strokes/min. Includes case