Two material components ensure optimal load values and intelligent functions depending on the substrate. The narrow anchor rim prevents slipping into the drill hole. Due to the greater anchoring depth of the DuoPower 6 x 50, 8 x 65, and 10 x 80, the anchors are particularly suitable for fastening in hollow building materials, aerated concrete, and for bridging plaster. The best possible feedback from the anchor ensures that you can feel when the anchor is perfectly seated. The pronounced anti-rotation feature prevents the anchor from twisting. The gray component made of high-quality nylon automatically activates the optimal functional principle (expansion, flaps) for the best hold, depending on the building material. The expansion wings of the red component support secure expansion and provide additional safety to the gray component. The easy-running opening allows for easy insertion of the screw as well as secure guidance and fixation in the screw channel. The required screw length is determined by the anchor length plus the thickness of the attachment part plus the screw diameter. Suitable for wood, chipboard, and lag screws. In the case of panel building materials, the unthreaded part of the screw must not be longer than the attachment part.