The DuoPower Professional Box dowel set from Fischer is used for various masonry tasks in the home, garage, and workshop. Thanks to its two material components, this clever dowel set is suitable for fastening all types of building materials, even aerated concrete and for bridging plaster. The dowels automatically adapt to the building material and can support high loads through their three functions (folding, expanding, and knotting). The narrow dowel edge prevents slipping into the drill hole. This Fischer set is perfect for the most common applications and building materials, providing the best possible feedback from the dowel. The included plastic box with a transparent lid and multiple compartments allows for easy storage and selection of the components.