Marketing InformationAviation 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 7x7 construction. WC8-CL25 and WC6-CL23 wire ropes have a 7x19 construction. All Duro Dyne® wire rope spools have a black and yellow thread running through the center of the wire rope, to show that it is genuine Duro Dyne® wire rope. Only use wire rope supplied by Duro Dyne® with Dyna-Tite cable locks to ensure maximum safety and integrity of the installation.