The Black & Decker cordless impact driver is designed with a high performance transmission that delivers a maximal torque of 1375 in-lbs. It features a quick release 1/4" hex chuck and a 20 V lithium-ion battery. A screw driving bit is included. Its compact and lightweight design provides ease of use and access to tight areas. This impact driver is backed by a Black & Decker 2-year limited warranty on parts and labour.