The Proto B943278 1/2" Drive Deep Impact Socket features the proprietary TorquePlus™ design, engineered for quick and secure engagement with fastener flats rather than corners. The radius-corner internal profile distributes contact stress over a larger surface area, significantly reducing slippage and minimizing fastener damage — making it ideal for stubborn, corroded, or damaged fasteners, as well as fasteners made from softer materials.
With a 33mm opening, 6-point geometry, and an extended 3-1/2" deep length, this socket provides excellent reach and access in confined or recessed applications. Built for use with impact wrenches and drivers, it delivers high-torque performance in demanding industrial, MRO, and professional mechanical environments.