The Cooper B-Line BKW125 1/8" diameter KwikWire Wire Rope is constructed from Type 7x7 wire rope. The KwikWire system replaces jack chain or ATR to support lighting, ductwork, and cable trays and can be quickly installed around beams. No drilling required. Spools of wire can be cut to length in field, reducing waste and up front planning. 450 lbs working load. 250 ft/spool.