A professional quality T55 impact star bit socket for commercial or occasional use. Manufactured by US.PRO Tools (formerly known as Bergen Tools), one of the more respected hand tool manufacturers on the market. Forged from quality Chrome Vanadium Steel (CR-V) for longevity and durability and helps resist abrasion, oxidation and corrosion. The socket is manufactured from hardened HRC 57-59 steel and the bit from S2 steel for increased resilience. It has a 1/2″ drive and total length is approx. 53mm. Laser etched size on body to allow easy identification. Black oxidised finish for increased resistance to corrosion for longevity.