The all metal gear case provides optimum seating of the gears for enhanced service life and offers 4 modes of operation: Rotary Hammer, Rotation Only, Chisel and Chisel Lock-Off. It is fitted with a Milwaukee® designed and built brushless POWERSTATE™ motor for up to 2x longer motor life and up to 25% more power. REDLINK PLUS™ intelligence system delivers the most advanced digital overload protection for tool and battery and uniquely enhances the tool performance under load. It also has a dedicated DE system with HEPA filter and an LED work light.