Working on European cars or machinery that uses triple-square (XZN) fasteners? This TEKTON impact bit socket is built tough. It's a 3/8-inch drive M8 triple square bit made for impact wrenches, but works great with hand tools too. The two-piece design uses different steels – the socket is chromium-vanadium for shock absorption, and the bit is harder S2 steel to keep its shape under stress. They're press-fit together permanently, so they won't loosen up on you. Compatible with both friction ring and detent pin impact anvils. The size is clearly laser-marked and stamped so it won't rub off. Whether you're a pro mechanic or a DIYer, this socket handles stubborn bolts without rounding them out. A must-have for VW, Audi, BMW, and other makes. Grab one and tackle those jobs with confidence!