Milwaukee Tool has added to its FUEL offering with the introduction of this 12V Reciprocating Saw. Delivering over 4X more run time, up to 70% faster cutting and 6X longer tool life, the M12 FUEL HACKZALL reciprocating saw has a compact, lightweight design for one-handed operation in tight spaces, and features reduced vibration for increased control and accuracy. The Milwaukee REDLITHIUM XC4.0 batteries are designed to endure extreme job-site conditions, operate cooler and perform in climates below 0°F/-18°C with fade free power. A battery fuel gauge also displays remaining charge for less down time on the job.