Bergstrom Manufacturing TOP Wire Guide Junction Box Pulling Tool For Wire, Fiber, Cat 5, Cable, Fish Tape Designed for 4-11/16 X 4-11/16, 4 Square, Octagon, 1 Gang, 2 Gang, 3 Gang (etc) Junction Boxes Constructed with a Stainless Steel Body, Aluminum Locking Tab, Plastic Rollers and Edge Guards for corrosion resistance Locking Tab eliminates the need for tightening screws to keep Top Wire Guide secure in place Hanger Tab allows user to feed wires through Top Wire Guide while hanging from ceiling, prior to pulling wires or Fish Tape The Bergstrom Manufacturing Top Wire Guide is a patent pending design and is made in the USA!