The Bosch CLPK232A-181 18V Cordless Combo Kit provides the maximum amount of maneuverability plus power on a jobsite. This collection has two powerhouses that deliver muscle-to-weight proportion: the Bosch DDS181A Compact Tough 1/2 In. Drill/Driver and the Bosch 25618 1/4 In. Hex Impact Driver. The Drill/Driver features Bosch's heavy-duty chuck, which prevents drill bits from slipping during high-torque applications, thanks to high clamping force. It also has an innovative canned motor, which is more compact but provides the same power as conventional 18V motors. It is very compact, with a 7.0 In. head-length and a weight of only 3.5 Lbs. The impact driver is designed for professional driving jobs, supplying 1,500 In.-Lbs. of torque, 2,800 rpm and 3,200 bpm - with a short 5.7 In. head-length. The included two 18V lithium-ion SlimPack Batteries and an 18V charger ensure these tools run as long as the job takes.