Aviation grade galvanized wire rope supplied by Duro Dyne is manufactured to exacting standards and statistically tested to verify stated breaking strengths. Duro Dyne WC2-CL6, WC3-CL12 and WC4-CL18 wire ropes utilize standard 7 x 7 construction. WC8-CL25 and WC6-CL23 wire ropes have 7 x 19 construction. Duro Dyne recommends only using wire rope supplied by Duro Dyne to ensure maximum safety and integrity of the installation. Duro Dyne® Duro-Tite® Wire Rope, 1/8 in Cable, 500 ft Length, 250 lb, Steel