The fischer DuoPower is an intelligent 2-component dowel designed for optimal performance across various building materials. It automatically adapts its function - spreading, folding, or knotting - to suit the surface, ensuring reliable fastening in solid, perforated, and panel materials. Its grey component activates the ideal operating principle based on the building material, while the red component's expansion wings provide secure spreading. This powerful universal dowel features a compact and short shape, reducing drilling effort. Its narrow edge prevents slipping into the drill hole when hammered, and an anti-rotation protection keeps the dowel from turning. You can immediately feel when it is perfectly seated due to optimal feedback. Suitable for attaching lightweight objects like lights, shelves, pictures, and curtain rails to walls and ceilings. It performs effectively in numerous building materials, including natural stone, concrete, plasterboard, and chipboard. Box contents include 1 DuoPower mini dowel set with 85 dowels: 30 x DuoPower 5 x 25, 35 x DuoPower 6 x 30, and 20 x DuoPower 8 x 40.