The M18 1/4” Hex Brushless Impact Driver is the Most Compact Impact Driver in its class and delivers maximum runtime. The MILWAUKEE built brushless motor, REDLINK Electronics, and REDLITHIUM™ batteries provide more efficient power delivery, for fewer trips to the charger. At only 137mm long and 1.41kg (with battery), this impact driver provides excellent control & balance in a compact size, perfect for work overhead or in tight spaces. The M18 ¼” Hex Brushless Impact Driver delivers up to 170Nm of torque and 0-2,800 RPM for a wide range of fastening applications.