Petzl Tibloc Petzl tibloc is ultra-light and compact which means you can put on the back of your harness and forget about it. Well until you need it. Ultra-light and very compact ascender for rope ascents, hauling systems or friction knot replacement in self-rescue situations. TIBLOC has an automatic system that presses the carabiner against the rope to start the braking action on the rope. Detailed description Can be used as a rope ascender or a progress capture device in a hauling system Automatic system presses the carabiner against the rope to start the braking action on the rope in any position Ultra-light (35 g) and very compact: the ascender can be carried permanently on the harness or in a pack Marking on the ascender is on side that is visible when installed Stainless steel cam with angled teeth and self-cleaning slot securely grips the rope, even in muddy or icy conditions Specifications Material(s): stainless steel Weight: 35 g Rope compatibility: 8 to 11 mm Carabiner compatibility: all Petzl models except SPIRIT Certification(s): CE EN 567, UKCA, UIAA