Wall plug FISCHER DUOPOWER 8x40, universal dowel, 450 pcs, grey/red

FISCHER DUOPOWER 8x40 is a universal dowel supplied in a pack of 450 pieces in grey/red. Designed to adapt its expansion behaviour to different base materials, this 8×40 mm wall plug provides secure anchoring in solid substrates such as concrete and brick, as well as in hollow and layered materials like plasterboard and aerated concrete. The dowel’s dual-material design allows it to expand, fold or shear depending on screw insertion and substrate, making it a flexible choice for a variety of general fixing tasks around the home or on the job site.

Advantages

The DUOPOWER dowel offers adaptive anchoring: its combination of plastic segments and ribs enables different load-transfer mechanisms in diverse substrates without the need for separate specialist plugs. Delivered in a large 450-piece pack, the product supports multiple projects and reduces the need for frequent restocking. The 8×40 size accommodates common screw diameters used for shelving, fittings and electrical fittings, while the grey/red colour coding helps with fast visual identification on site.

Suitable for

• Mounting shelves and cabinets to masonry or drywall
• Fixing light to medium-weight fixtures such as hooks, rails and brackets
• Installing electrical boxes, sockets and conduit clips
• General renovation and handyman tasks requiring reliable anchors

Key specifications

• Dowel length: 40 mm
• Dowel diameter: 8 mm
• Material: dual-effect plastic design for adaptive expansion and folding
• Colour: grey/red for identification
• Pack quantity: 450 pieces
• Compatible screw types: wood and chipboard screws of matching diameter
• Applicable substrates: solid masonry, brick, concrete, aerated concrete, plasterboard and other hollow or layered materials

How to use

Drill a hole of the recommended diameter for an 8 mm dowel into the chosen substrate, ensuring the hole depth accommodates the full 40 mm length. Clean out drilling dust before inserting the dowel. Insert the DUOPOWER dowel flush with the surface, position the fixture, and drive a suitable screw of the matching diameter straight into the dowel until the fixture is held firmly. The dowel will adapt its expansion or folding behaviour according to the substrate as the screw is tightened, creating a secure anchor.

Usage recommendations

For optimal performance, choose screw lengths that allow at least 20–25 mm engagement into the dowel beyond the fixture thickness. Use drill speed and pressure appropriate to the substrate to avoid oversized holes; when fixing in hollow or brittle materials, consider using an installation aid or shorter screws to prevent overloading the substrate. Store packs in a dry place to maintain plastic properties.