The 12V max Lithium-Ion Cordless 3/8” Impact Wrench (WT01W) is the perfect addition to any tool box or tool belt. The WT01W weighs only 2.1 lbs. (with battery), and delivers pro power and pro speed in an ultra-compact design for driving and fastening applications, with a convenient 3/8" square drive for quick socket changes. Three-eighths-inch square drives are widely used by automotive technicians so the WT01W is ideal solution for automotive, as well as other applications in close quarters that require fastening power in an ultra-compact design, without the cord. It’s part of Makita’s expanding 12V max Lithium-Ion cordless line-up, which includes driver-drills as well as an impact driver, impact wrench, circular saw, recipro saw, jig saw, vacuum, and flashlights. Consistent with the rest of Makita’s groundbreaking Lithium-Ion battery technology, the 12V max Lithium-Ion battery delivers more power in a compact size for maximum efficiency. The WT01W features a Makita-built variable speed motor that delivers 1,000 in.lbs. of Max Torque, a no load speed of 0-2,300 RPM, and 0-3,000 impacts per minute with a durable and long-lasting hammer/anvil design. It has an L.E.D. light to illuminate the work surface, and ergonomic grip that fits like a glove for even pressure and easy control.