Bosch IDH182WC-102 18-Volt Lithium-Ion Wireless Charging Kit with Brushless Socket Ready Impact Driver, 1 Wireless Battery, Charger and Contractor Bag All-in-one impact driver and impact wrench with a 1/4-inch quick-change hex and 1/2-inch square drive chuck for sockets Highest torque output in its class at 1,650 inch-pounds New wireless charging batteries charge anytime and anywhere without ever having to remove from your tool Unique CoolPack design gives the battery a special heat conductive housing that pulls heat away from inside the battery, keeping the battery cooler New high efficiency cells give the WCBAT612 up to a 65 percent more runtime versus 1.5 & 3.0 Ah battery packs