The Bosch 18v cordless 4-tool combo kit includes the 2-in-1 impact driver with a 1 ⁄ 4 '' quick-change hex-shank holder, power groove for bits, ½” square drive for sockets and 1,800 in-lbs. of torque. The set also has a 1⁄2'' hammer drill/driver that delivers 490 in-lbs. of torque, a no-load bpm of 0-22,000, 20+1 clutch settings; a 6½” circular saw that cuts through “two by” material across a bevel range of 50 degrees; and a work light with 300 minutes of runtime per amp hour. Includes a Core18V 4.0Ah compact battery, 18V 2.0Ah SlimPack battery and 18V charger.