PORTER-CABLE PC18CHD 1/2-Inch 18-Volt Hammer-Drill, Bare Tool-No Battery High output motor delivers 424 in/lbs of torque providing power to complete jobsite applications more efficiently 2 speed high torque/high speed gearbox - High speed for increased productivity and low speed provides maximum torque for heavy applications 22 Position clutch allows the user to properly set torque which reduces overdriving and stripping of fasteners Hammer setting delivers 0 - 25,500 BPM for fast driling in block, brick and concrete Comes without battery or charger. Compatible with Porter-Cable Lithium Ion and NiCD battery packs allows user to use all Porter-Cable 18-Volt batteries regardless of chemistry