The Milwaukee M18 FQID Fuel™ Surge™ Hydraulic Impact Driver is the quietest cordless fastening solution on the market. FLUID-DRIVE™ hydraulic powertrain reduces metal on metal contact within the tool, delivering quieter operation, smoother performance and increased durability over a standard impact driver. The POWERSTATE™ brushless motor delivers a constant power output to drive screws faster. The Milwaukee® DRIVE CONTROL™ allows the user to shift into three different speed and torque settings to maximise application versatility. With a self-tapping screw mode, designed to reduce walking when starting self-tapping screws as well as reduce over driving, breaking and stripping out screws. It delivers the same performance in wood fastening as standard brushless impact drivers. REDLINK PLUS™ intelligence system delivers the most advanced digital overload protection for tool and battery and uniquely enhances the tool performance under load. Bare Unit, No Battery or Charger. Specification Bit Holder: 6.35mm (1/4in) Hex Chuck.No Load Speed: 0-1,800/2,900/4,000/Min.Impact Rate: 0-900/2,100/3,000/bpm.Torque: 50Nm.Max Bolt Diameter: M14.Weight: 1.7kg.