The Fischer DuoPower is an intelligent 2-component plug with 3 product functions: Folding, Expanding and Knotting The intelligent universal plug is suitable for fixing in all building materials This allows a variety of applications with just one plug The Fischer DuoPower adjusts itself automatically to the building material and transfers the highest loads through the 3 product functions The very good feedback from the plug when screwing the screw in generates extra security The Fischer DuoPower universal plugs are particularly suitable for fixings in hollow building materials, aerated concrete and for bridge plaster Great feedback (feel-good factor) of the plug. You can feel exactly when the plug is installed perfectly The short plug length ensures fast fixing without deep drilling The narrow plug rim prevents slipping into the drill hole The serrated anti-rotation feature prevents rotation in the drill hole during installation