Covered by Hitachi's Lifetime Lithium Ion tool warranty, the DV18DBL2P4 (tool body only)Hammer Drill features Hitachi's Brushless motor technology that delivers more power to the motor by minimizing unnecessary energy loss through friction and heat. Managed by a micro-processor chip that efficiently delivers current flow to the motor, Brushless tools experience longer run time between charges, increased power, and extended durability with essentially no maintenance. The built-in Reactive Force Control (RFC) system reduces the risk of injury to the user from tool overload, and also protects the battery and motor. Hitachi's signature ergonomic design for the tool body makes it extremely well-balanced and comfortable for extended use. Available as a tool body only, this hammer drill is compatible with all Hitachi 18V Lithium Ion slide-type batteries and is ideal for drilling into concrete, boring large holes into wood or driving lag bolts, yet it's 22+2 clutch settings allow the user to adapt to low torque applications like hardware installation or furniture assembly.