The fischer DUOPOWER offers very good load bearing capacities as a result of the 2 components: The grey component from high quality nylon automatically activates the optimum product function (expansion, folding) for the best hold. The expansion wings of the red component support the secure expansion and provide additional security for the grey component. Simple tightening of the screw and correct "pulling" at the end. No over-tightening of the screw. The edge, formed on the anchor head, prevents the anchor sliding into the drill hole. The DUOPOWER is the first selection for fixing, for example, shower curtain rails, letter boxes, lights, motion detectors, signs and house numbers.