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. 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, UIAA.