Stanley STMT89308-8B 3/4 Inch Drive Extension Bar 400 mm

The Stanley STMT89308-8B is a 400 mm extension bar for 3/4-inch square drive sockets. Fitted between the ratchet or handle and the socket, an extension adds reach to nuts and bolts that sit deep or behind other parts. This is the longer of the two 3/4-inch extensions Stanley offers, next to a 200 mm bar, and Stanley marks its 3/4-inch drive accessories as exceeding the ANSI standard.