Crescent has brought leading innovation to the professional hammer category with the 11" Fiberglass 4 lb. Engineer Hammer (CHFENG64). The heavy duty, over-sized protective sleeve is designed to prevent damage due to overstriking. This hammer is constructed using forged carbon steel head and Vibeguard technology which helps maximize the strike life of the hammer while reducing vibration. This hammer features a textured ambidextrous grip that gives users an ergonomically sound and sure grip on the hammer. The fiberglass core with PP sleeve provides maximum vibration reduction and strength to survive the rigors of the jobsite. The Permabond® construction securely attaches the head to the handle.