The milwaukee m18bsx reciprocating saw fitted with a high performance 4 pole motor that delivers maximum power whilst maximising the power to weight ratio the counter balance mechanism reduces vibrations to 152 ms in wooden beams it is fitted with milwaukees patented fixtec clamp for fast and easy keyless blade change redlink overload protection electronics in tool and battery pack deliver best in class system durability m18bsx 402c 2 x 18 volt 40ah li ion batteries m18 bsx 0 bare unit no batt