Socket extension, impact, 1/2 inch drive, 75 mm, 47001BEXT-1/2, Brito.

A socket extension is a device that allows a socket wrench to reach into hard-to-access places. The socket extension fits between the ratchet and the socket to create a tool capable of reaching nuts and bolts in hard-to-reach locations. Impact extensions function like any other extensions except they're designed for use with power tools such as electric or pneumatic air wrenches.