The HACKZALLM18 Cordless LITHIUM-ION One- Handed Recip Saw(2625-20) features a Patent Pending Dual Gear Anti-Vibration System for unmatched comfort and control as well as light weight design for superior control and versatility. The powerful motor delivers 0-3,000 strokes per minute and a 3/4" stroke length allows for fast cutting through a wide range of material such as wood, metal and PVC. The dual gear anti-vibration system increases control and accuracy. The 2625-21 also features a QUIK-LOK blade clamp which offers fast and easy blade changes.