20-Volt MAX Lithium-Ion Brushless Cordless 1/4 in. Impact Driver with 2 Batteries 1.5 Ah and ChargerThe Porter Cable 20 Volt MAX Cordless Impact Driver is brushless to increase motor life and deliver the power you need, along with 50% more runtime. This powerful motor handles large fastening applications and provided enough RPM for quick speed. The quick change hex allows for one handed quick and easy bit changes. Brushless motor provides 50% more runtime Powerful motor provides 1,400 in. lbs. of torque for large fastening applications Transmission