The 18V STANLEY® FATMAX® V20 Cordless 2 Piece Combo Kit features new and improved battery technology, with no memory effect and minimal self-discharge, coupled with brushless motor technology, for improved power efficiency and run time. The kit includes one 18V STANLEY® FATMAX® V20 Cordless Hammer Drill and one 18V STANLEY® FATMAX® V20 Cordless Impact Driver. The Hammer Drill has a powerful motor delivering up to 25,000 BPM, 1,500RPM and 50Nm of torque for efficient drilling and screwdriving into masonry, wood, metal and plastic. The Impact Driver provides 2,800 RPM, 3,100 BPM and 165Nm of torque for driving large fasteners and other high torque applications. Part of the new 18V STANLEY® FATMAX® V20 Cordless System – power all your V20 tools with a common new and improved 18V Lithium Ion battery to let you power through work with ease.