The Fiberfish II  The Fiberfish II by BES Manufacturing is the most versatile of the wire pull rods. Works great in a variety of situations where fiberglass pull rods are used. It can be used with low voltage applications such as Cat 5 and coax and it is also rugged enough to push/pull heavier cable such as Romex. At 3/16" in diameter it is fairly flexible yet still retains a good deal of stiffness.