A DeWalt 4-in-1 cordless combo kit is an all-in-one power tool workshop packaged inside a single heavy-duty carrying case. It provides a versatile collection of cordless machines engineered to run on the same interchangeable lithium-ion battery packs.The 4 Core Machines in the KitCordless Drill/Driver: Used for basic wood and metal drilling, plus day-to-day screw driving.Cordless Impact Wrench/Driver: Delivers high-torque rotary impacts to tighten or loosen stubborn bolts, lug nuts, and heavy fasteners.Rotary Hammer Drill: Built with an internal piston mechanism to pulverize and bore clean holes through concrete, brick, and solid masonry.Angle Grinder / Cutting Machine: Spin-driven cutting tool used to slice through rebar, grind down welds, and polish rough metal edges.