M18 Fuel, Hackzall Kit, Cuts Up To 50% Faster, 4X Lower Vibration For Smooth Cut Starts & One Hand Control, Compact & Lightweight Design Allows For Easier Cutting In Tight Spaces Or Overhead Applications, Red Link Plus Intelligence The Most Advanced System Of Cordless Power Tool Electronics Provides Optimized Performance & Overload Protection Using Total System Communication Between Tool, Battery & Charger, Red Lithium Battery Technology Superior Pack Construction, Electronics & Performance Deliver More Work Per Charge & More Work Over Pack Life Than Any Battery On The Market, One Handed Design Provides Superior Control & Versatility Over Standard Reciprocating Saws, 7/8" Stroke Length Removes More Material With Each Stroke Resulting In The Faster Cuts, Includes M18 Red Lithium XC 5.0Ah Battery, M18 & M12 Charger & Contractor Bag.