FLEXIBLE INSULATED WRENCH 8FT 3IN, These wrenches are used for tightening nuts on hardware fittings on high-voltage lines. The coil spring around the universal joint has just the proper degree of flexibility so that the operator has control over the socket at various angles. Spring is easily removed for lubricating. Wrenches are made to fit any .5-inch square-shank socket. Chance sockets are deep throated and accurately broached. All wrenches are mounted on 1.5 in diameter Epoxiglas® poles.