The DW317 Jig Saw has a powerful 5.5 amp motor with variable speed to deliver up to 3,100 strokes per minute. Variable speed delivers 0 - 3,100 strokes per minute for optimal cutting speed. The 4-position orbital action provides faster, more aggressive cuts. A keyless blade clamp makes changing blades quick and easy and bevel detents at 0 deg. and 45 deg. help ensure accurate beveling.