The M18™ 1/4 in hex brushless impact driver is the most compact impact driver in its class and delivers over 50% more runtime than impact drivers with brushed motors. The Milwaukee® built brushless motor REDLinK™ electronics and REDLITHIUM™ batteries provide more efficient power delivery, for fewer trips to the charger. At only 5-3/8 in long and 3.1 lb (with battery), this impact driver provides excellent control and balance in a compact size, perfect for work overhead or in tight spaces. The M18™ 1/4 in hex brushless impact driver delivers up to 1500 in-lb of torque and 0 to 2800 rpm for a wide range of fastening applications.