The 36V Impact Driver Kit, "Triple Hammer" (WH36DBG), is a first of its kind incorporating a third anvil, significantly increasing driving speed, beats per minute and torque.This provides an innovative solution to make any job site even more productive while at the same time decreasing the size, weight and vibration!The Metabo HPT 36 volt cordless impact driver kit with 2 batteries, charger and case features the power to weight ratio that is ideal to GO beyond the normal applications with up to 1,859 in-lbs of torque, up to 2,900 RPM, and up to 4,100 IPM (Impacts per Minute). GO faster with the Triple Hammer technology, which integrates a 3nd impacting anvil allowing more beats per minutes to loosen even the most stuck screws or GO slow and precise with the variable speed trigger. Equipped with four different speed settings, the Triple Hammer impact driver can conveniently tackle a wide variety of applications such as for fastening hinges to driving lag bolts, with just one tool in hand.