TIBLOC Ascender Saddle Harness Combo The Crosby McKissick 419 Light A060PC04100 The Crosby McKissick 419 Light Champion Hook Snatch Block is made in the USA which keeps the impact force to the allowable parameters required by OSHA and ANSI in the event a worker experiences up to a 12 fall 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 or friction knot replacement in self rescue situations