Features of the Petzl Rad Line 6 mm Rope Ultra-light construction at only 22 grams per meter Compatible with the TIBLOC and MICRO TRAXION ascenders, thanks to the special Dyneema and aramid-reinforcedsheath Hyperstatic: cord elongation of less than 2 %, to facilitate and improve efficiency of rescue maneuvers, and also to eliminate the yo-yo effect during rappels or fall arrest in a crevasse