The 18V 1-1/8" D-Handle Reciprocating Saw Kit comes with a powerful, compact saw and a CORE18V 4 Ah battery. The saw is only 17.7" long and 6.35 lbs. (tool only, not including battery), and it delivers an efficient 1 1/8" stroke, to remove more material per stroke. The saw's Lockjaw system allows for toolless one-handed blade changes. It has two speed ranges to match the speed of the cut to the material. The CORE18V Advanced Battery is the next-gen Lithium-ion battery that keeps the power and runtime, while losing the weight.