From light construction to demolition, the 20V MAX* XR® brushless cordless reciprocating saw delivers the cutting power and maneuverability needed for challenging projects. The 1-1/8 in. Stroke length and lightweight build offer quick cuts and high productivity. This kit includes our most powerful battery in its class", the 20V MAX* XR®(r) 5ah battery that utilizes revolutionary pouch cell technology to deliver 50% more power", 50% more work per charge" ", and 2x the lifespan.