The Milwaukee M12 FUEL SURGE HDD 2-piece Combo kit gives users the best in compact drilling and driving on the M12 battery platform. The M12 FUEL SURGE 1/4 in. hex hydraulic driver is the industry's first 12 Volt hydraulic impact driver. The FLUID-DRIVE hydraulic powertrain's hydraulic impact allows for operation up to 2X quieter with less vibration for smoother and faster driving speeds. Its compact size provides unmatched access in tight spaces and allows for easy transport on a tool belt or in a tool bag. The M12 FUEL hammer drill driver is the most capable, lightest weight, most compact tool in its class. It is lightweight at 2.3 lbs and a compact 6.6 in. frame provides great access in tight spaces. The compact hammer drill driver delivers up to 1700 RPM and 350 in-lbs of torque. Both tools feature Milwaukee POWERSTATE brushless motors, Redlink Plus Intelligence tool technology, and are powered by M12 REDLITHIUM batteries. in addition to the tools, this kit includes one M12 REDLITHIUM CP2.0 battery, one M12 REDLITHIUM XC 4.0 battery, an M12 lithium-ion battery charger, and a contractor bag.