TightWire™ grips hold cut-out wire quickly and securely. They work equally well on solid, square or braided cut-out wire. To use, unscrew the two halves and insert the wire end into the hole until the end hits the bottom. Bend the wire over and pull it around the center at least one time. Then twist the handles back together tightly. Made of aluminum with red vinyl handle covers. Each set contains two handles. Made in USA.