The MILWAUKEE M18 Compact Brushless 1/4" Hex Impact Driver has maximum power. The brushless motor technology is optimised for the driver, providing maximum torque and longer runtime. The motor designed for this impact driver delivers a smaller tool at 129mm., extends battery life and greatly improves access to small and tight spaces. Built-in REDLINK electronics optimise the power draw from the REDLITHIUM™ batteries, delivering 3,400 RPM's for best in class application speed and performance. The impact driver also has single-handed bit insertion for easy bit exchange.