Dewalt Flexvolt - DCH892X1 - 60V MAX* 22 lb Cordless SDS MAX Chipping Hammer KitComplete a wide range of concrete and masonry work with this 60V MAX 22 lb. Cordless SDS MAX Chipping Hammer Kit. Designed for high performance demo projects, this hammer rapidly chips dense concrete with up to 19. 4 J of impact energy. From general contracting work to heavy duty highway and DOT jobs, this rugged hammer can tackle a variety of demanding projects while maintaining consistent speed under load with constant speed electronics. Built for