Towing sock (original) (raw)

A towing sock or wire rope puller or wire pulling grip is a device that connects to the end of a cable, such as a power cable, in order to pull it through a tube or tunnel. It works by tightening around the cable when pulled, in the same manner as a Chinese finger trap. The towing sock is tubular and made of braided cable, open at one end and closed at the other where it connects to a tow line using an eye splice.