A professional quality TWELVE point extra deep impact 46mm socket for both 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 hardened Chrome Molybdenum Steel (CR-Mo) for increased durability and longevity. Hardened to HRC 42-45 for increased resilience. Black phosphate finish for greater corrosion resistance for longevity. Laser etched size on the body for easy identification. 1/2″ drive with a total length of 100mm.