The LXT218 consists of a 1/2-inch hammer driver-drill with peak torque and climax velocity, in addition to a robust impact driver that weighs just 3.3 pounds. Each device is driven by Makita's 18V LXT Lithium-Ion battery and also the ENERGY STAR rated Makita Rapid Optimum Charger. Makita's LXT218 consists of a 1/2-inch hammer driver-drill with high torque and high speed (BHP454Z). The BHP454Z offers a Makita-built four-pole maximum torque motor that delivers 560 in.lbs. of Max Torque and 360 in.lbs. of PTI Torque inside a compact size. The BHP454Z includes a Shift-Lock drive system sleeve that quickly shifts from "hammer drill" to "driver" mode. The Makita 18V LXT Lithium-Ion Cordless 2-Piece Combo Kit is made for the professional-user who requires Best in Class cordless tools for drilling, hammer drilling, driving and fastening.