The R410020LE 20 ft Max Patrol Leading Edge self-retracting lifeline is approved for use in Leading Edge applications. Tested over the most common Leading Edge materials the Max Patrol Leading Edge is approved for use over steel beam, ProMaster concrete and b-deck. Lightweight and rugged design the R410020LE has 20 Ft. of 3⁄ 16 In. galvanized steel cable, with a polyester shock pack and a polymer housing. Unique carrying handle provides for easy transport. As an ANSI class A device, the Max Patrol Leading Edge is ideal for low clearance applications.