Depth sensitive "set and forget" nosepiece for consistent fastener depth. Two-finger trigger for increased comfort. Helical-cut steel, heat-treated gears for long life and durability. High power motor for metal fastening applications. Versa-clutch® torque adjustment system to "dial" the proper torque needed to efficiently drive fasteners without stripping or breaking fastener. Excellent ergonomics offers less user fatigue. Rubber grip. Also available in 220V