Makita 18V LXT Brushless Impact Driver - cordless convenience so you can work anywhere and get the job done quickly. The cordless Makita DTD173Z Impact Driver is powered by 18V Li-ion LXT slide type battery (not included), and offers variable speed and 4-stage impact power selection. It delivers up to 170Nm fastening torque on hard when tightening an M16 high strength bolt, 50Nm on medium using an M10 high strength bolt and 20Nm on soft when using an M8 high strength bolt. It's also equipped with a trigger lock function, reverse switch, electric brake, LED job light with pre-glow and afterglow with 3 stage dimming functions and easy to switch panel situated to the back of the battery. The Makita DTD173Z Impact Driver features 4 mode electronic impact power selection plus 4 assist modes; 2 T-modes, wood mode and bolt mode; wood mode, bolt mode and T-mode suitable for thin and thick metal. Wood mode drives a screw with low speed rotation at first, then after starting to impact, the rotation speed increases and reaches maximum speed, ideal for tightening long screws in wood, bolt mode/reverse rotation auto-stop mode is ideal for loosening bolts and helps to prevent a bolt from falling off, T1 is designed for driving self-drilling screws into a thin metal including metal studs. The tool stops rotating soon after impact starts and T2 is designed for driving self-drilling screws into thick metal plate with a good finish. This mode helps to prevent the screws from breaking and stripping. The Makita DTD173Z also features an anti-bit wobbling structure, quick mode switching button and memory function. Maximum capacity M4 to M8 machine screw, M5 to M16 standard bolt, M5 to M14 high strength bolt and 22 to 125mm coarse thread screw. The DTD173Z is not compatible with G-Series batteries. Depth: 111 MM Height: 234 MM Width: 81 MM Case Included: N Cordless: Y Fuel Type: Battery Handle Type: Soft Grip Handle Cordless Power Type: Battery Reverse Function: Y Included Torque (in NM): 180 Trigger lock function Reverse switch LED job light with pre-glow and afterglow and 3 stage dimming functions Electric brake Easy to switch panel situated at the back of the battery 4 mode electronic impact power selection 4 assist modes; 2 T-modes, wood mode and bolt mode; wood mode, bolt mode and T-mode suitable for thin and thick metal Wood mode drives a screw with low speed rotation at first, then after starting to impact, the rotation speed increases and reaches maximum speed. Bolt mode/reverse rotation auto-stop mode is ideal for loosening bolts and helps to prevent a bolt from falling off