Professional breaker bar head for commercial or occasional use A replacement 3/8” drive power / breaker / knuckle bar head suitable for most bars Manufactured from chrome molybdenum steel for strength and durability Black phosphate finish resists rust and corrosion Suitable for all 3/8” drive power bars no matter what the make and model (as long as the breaker bar head is the same style as pictured) Suitable for those with an end on the handle Includes fixing bolt and spring washer 3/8” square drive Total gap between the jaws 10mm This listing is for a 5 pack of breaker bar heads