Professional 125mm (5") long impact extension bar for use with 1/2" drive ratchet or breaker bar. Specially designed with spring-loaded ball end. Made of hardened and tempered Chrome Molybdenum (Cr-Mo) steel with manganese phosphate finish for extra corrosion resistance. Feature retaining hole for extra safety (pin and safety ring can be purchased separately). Overall length of 125mm. Manufactured for professional daily use with air or battery powered impact wrench. Supplied as individual impact extension bar.