The M18 SAWZALL Reciprocating Saw delivers unmatched durability, speed, and run-time. The all metal gearing and REDLINK Intellgence provide ultimate performance and protection against jobsite conditions. The M18 SAWZALL Reciprocating Saw provides up to 30% faster cutting and 50% more run-time in key applications versus leading competitors. The slim front end design provides improved ergonomics, offering maximum comfort and control. Counter balance mechanism reduces vibration for more control and less fatigue.All metal gearing and gear case.Lever action Quik-Lok blade clamp provides fast and easy blade changes.REDLINK Intelligence protects the tool against abusive conditions and provides maximum life.Keyless blade change.