The impact drill/driver is designed to handle difficult materials (such as metal or masonry) anywhere on the construction site. This powerful impact drill driver has a quick mode selection feature to switch between impact modes , drilling mode and driving mode and also includes a clutch with 20 precise torque settings. GSB18V-490 is equipped with Bosch electronic engine protection LED for illumination and belt clip. BOSCH Cobalt M42 metal drills are made of upgraded M42 alloy coverage 8% cab. These cobalt carbide bits require 10 times the service life of standard bits They are small in size and can withstand high temperature conditions. These cobalt drill bits offer superior performance when machining and drilling cast iron titanium and other alloys or abrasive metals.