40 Pcs M4 M5 Metal Cavity Wall Fixings & Hollow Wall Anchors

• Complete 40-Piece Set for Hollow Walls：This kit includes 40 metal cavity wall fixings in four sizes: M4×38, M4×46, M5×37, and M5×52. Perfect for hollow wall anchors, dot and dab wall fixings, and hollow door fixings. Enough for multiple DIY jobs around your home.
• Strong Zinc-Plated Metal Construction：Made from durable metal with a zinc-plated finish, these wall anchors resist rust and corrosion. Use them as metal plasterboard wall plugs or heavy‑duty drywall fixings – they hold firmly in plasterboard, hollow brick, and cavity walls.
• Butterfly-Shaped Expansion Design：The unique butterfly-shaped hollow brick expansion bolts open behind the wall surface, creating a secure lock. Unlike ordinary plugs, these hollow wall fixings spread the load inside the cavity, giving you reliable holding power for heavier items.
• Easy to Install – With or Without Setting Tool：Drill a pilot hole, insert the hollow wall anchor, then tighten. For quicker work, use a wall anchor setting tool. These cavity wall fixings work great in hollow walls, dot and dab plasterboard, and even hollow doors – no complicated steps.
• Wide Use Around Your Home：Ideal for fixing shelves, curtain rails, TV brackets, and light fittings. Suitable for drywall, plasterboard, hollow brick, and cavity walls. Whether you need metal cavity wall fixings or general wall anchors, this set covers all common hanging tasks.

1. Product parameters Package Contents: 40 metal cavity wall fasteners in four mixed sizes – M4×38, M4×46, M5×37, M5×52 (10 of each) Material: Solid metal, surface galvanized, anti-rust and resistant to daily wear Design: Butterfly-shaped expansion bolts that can be fixed behind cavity walls, plasterboards, drywalls, stippled walls and even hollow doors Scope of application: Most common home decoration walls, places where ordinary screws cannot be firmly fixed alone Please refer to the main picture above for the exact size of the product. 2. Solve user needs Cavity walls don’t provide a solid grip – regular screws and plugs tend to pull out easily. This cavity wall fastener and cavity wall anchor is specially designed for tricky surfaces like drywall, drywall and cavity brick. Once inserted, butterfly expansion bolts expand behind the wall to create a strong, reliable hold that won't slip or loosen over time. Wasting time trying to find the right size? This 40-piece set includes four common sizes (M4 and M5) so you always have the right wall anchor on hand. Whether you're installing shelves, hanging curtain tracks or adding light fixtures, you can just grab the right size metal drywall wall plugs and skip another trip to the store. Worried about rust or breakage? Galvanized metal construction helps these cavity wall fixtures stay strong and clean. They are designed for everyday use in living rooms, kitchens, bedrooms and even hallways with hollow doors. 3. Usage scenarios Install shelves on drywall living room walls – these cavity wall fixtures safely support the weight of books, greenery or decorative items. Hang curtain rods above drywall windows – Butterfly hollow brick expansion bolts lock behind the surface so the curtains won’t fall if the fasteners come loose. Install the TV bracket on the spot-coated wall – use the M5 size, which has a stronger load-bearing capacity, for greater peace of mind. These cavity wall anchors disperse pressure inside the cavity, reducing the risk of wall damage. Fasten a towel rail or bathroom cabinet to a hollow tile wall – the metal structure is more resistant to moisture than regular plastic risers. Fasten items (such as small hooks or notice boards) to hollow core doors – These hollow door fasteners still work when regular screws have nowhere to bite. Everyday DIY tasks in UK homes – from student flats to family homes, this set of products is your reliable helper whenever you feel like there’s “empty space” behind your walls. No more worries about loose screws, slipping plugs, or damaged drywall edges. Simply drill a small pilot hole, push in the appropriate wall anchor, and tighten. The expansion mechanism automatically does the rest – giving you a strong, long-lasting hold that feels as secure as if it were attached to a solid wood stud wall.