METRIC, 1/2” DRIVE, PATHFINDER, STANDARD LENGTH, IMPACT SOCKET. The beveled flats of the 6-point opening of the PATHFINDER socket engage the nut almost immediately. PATHFINDER sockets are ideal for use with power tools in automatic assembly processes, as the power tool does not have to be totally stopped for the socket to engage the nut. Input Drive Size; 1/2" Drive shape: Square Length: 80mm Type: Pathfinder Socket Output size: 17mm Product Dimension (Refer Line Drawing Image): D1 Size: 25.7mm D2 Size: 30mm H1 Size: 12mm H2 Size: 62mm L Size: 80mm