Milwaukee m18 sawzall reciprocating saw delivers unmatched durability, speed, and run-time. All metal gearing and redlink intellgence provide ultimate performance and protection against jobsite conditions. M18 sawzall reciprocating saw provides up to 30% faster cutting and 50% more run-time in key applications versus leading competitors. Slim front end design provides improved ergonomics, offering maximum comfort and control. Features counter balance mechanism that reduces vibration for more control and less fatigue. Lever action quik-lok blade clamp provides fast and easy blade changes.Milwaukee m18 redlithium xc5.0 starter kit delivers up to 2.5x more runtime, 20% more power and 2x more recharges than standard lithium-ion batteries. Lithium-ion battery pack features superior pack construction, electronics, and performance giving you more work per charge and more work over pack life than any battery on market. Rechargeable battery also offers you 5.0 amp-hours of runtime. Each battery pack is durably built for heavy-duty use, runs cooler, and performs in climates below 0°f/-18°c. This protection routes water away from electronics and out of battery pack, extends your battery’s run-time and life by minimizing heat, and prevents pack failures from vibration or drops.