3M™ DBI-SALA® Rope Lifeline is part of an exhaustive line of twisted 3 strand and kernmantle type lifelines, available in assembly configurations with a snap hook or simple cut lengths only. 3M stocks various sizes including ½” (12.7 mm) and 5/8" (16 mm) in polyester, nylon and polyester/polypropylene blend construction to suit almost any need imaginable. Lifelines are durable and incorporate unique terminations for added strength and durability. Also offered are several styles of counterweights to keep the lifeline taut and optimize performance for rope grab systems.