Bosch Bare-Tool 24618B 18-Volt Lithium-ion 1/2-Inch Square Drive Impact Wrench Compact Impactor Design for increased maneuverability in tight spaces Electronic Cell Protection (ECP) - Unique battery pack design and customized electronics to deliver optimal battery life and performance Faster and offers more torque Spring loaded impact mechanism reduces user fatigue Built-in LED Light - Great for dark corners or enclosed areas Up to 25-percent lighter Most compact - 23-percent shorter than competitors - Only 6-Inch long, the most compact design in the market Faster and more torque - 2,800 RPM and 1,600-Inch/pounds of torque Highest BPM in category - over 3,200 BPM Led light - for use in dark areas