22-Volt Lithium-Ion 1/2 in. Cordless High Torque Drill Driver SF 10W ATC Tool BodyHilti's SF 10W A22 ATC Cordless Hammer Drill Driver is the essential item for Tradesmen who require performance, durability and safety thanks to Active Torque Control feature that helps protect users if the drill binds up during a drilling application. This tool is the perfect add on to any 18 Volt or 22 Volt Hilti Lithium Ion Kit because it has the power to tackle tough applications and it is backed up by an industry leading commercial use tool