Construction professionals that drill holes and drive fasteners into wood, metal or concrete need a cordless hammer drill and driver with the power to tackle a variety of hole sizes plus the compact size to get into tight work spaces. The 14.4 volt EY7940LR2S hammer drill kit (EY7940X tool only) excels at the variety of jobs electricians, general construction contractors, system installers, heating, water and sanitation technicians do that involve masonry, metal or wood drilling or fastening. At only 3.96 lbs. with the battery, the tool is easy to use in overhead or far-reaching applications. At only 7-7/8" long x 9-1/8" tall x 2-3/8" wide, the compact tool delivers 390 in.-lbs. of torque and capable of drilling up to 1/2" holes in metal or masonry or up to 1-3/8" diameter holes in wood. The two-speed transmission produces 70-400 rpm/1,260-7,200 bpm in low speed and 200-1,400 rpm/3,600-25,200 bpm in high speed. The variable speed and reversible tool has the power to efficiently drive M5 machine screws and up to ¼" diameter wood and self-drilling screws. Workers can select one of 16 clutch settings, which steps up 1.8 in. lbs. from 8.8 to 39 in. lbs., to match torque to fastener driving needs. An electric brake stops the heavy-duty keyless chuck immediately when the trigger is released; an LED light illuminates the work area for accurate drilling or fastening.