Designed for efficient fastening in steel building and HVAC applications, this screwdriver delivers 2500 RPM and 140 in-lbs of torque. The 21-position clutch slips with minimum reaction force when the screw head reaches the selected torque. It also features a self-locking, quick-change chuck for convenient accessory changes. This balanced, lightweight tool makes it easy to join thin gauge to heavier gauge materials.