PORTER-CABLE PCC520B 18-Volt Two-Speed Close Quarters Drill High Performance motor and gearbox deliver torque required for drilling through studs and joists Variable speed and reversing gives user more control over speed for greater accuracy Compact head size makes it easy to work between studs and in any other close quarter applications Single sleeve 3/8-Inch chuck provides high grip torque for excellent bit retention Compatible with Porter-Cable 18V Lithium-Ion or NiCd batteries