The 20-volt MAX lithium ion 3/8-in impact wrench kit features a compact, lightweight design that fits into all kinds of tight areas. It has 3 LED lights with 20 second delay after trigger release, that helps to provide visibility without shadows. Also features a hog ring anvil to easily change sockets. A 1/2-in square drive. The textured anti-slip comfort grip provides maximum comfort and control for the user. Powered by a XR Li-ion battery with fuel gauge which provides 33% more capacity over standard packs. Applications include driving and removing fasteners in wood, metal or concrete/fastening and removing nuts and bolts/and primarily for use with impact sockets. Includes fast charger, two 20-volt MAX XR premium Li-ion batteries (4.0 Ah) and kit box. Maximum initial battery voltage - measured without a workload - is 20-volt nominal voltage is 18.