How does the Hollow Wall Anchor work?

Hollow Wall Anchors work by providing a stable anchor for light to medium loads based on their design and installation.

1. Basic Construction and Installation
Hollow Wall Anchors usually consist of a metal sleeve (or "shell") with expandable blades or wings inside. To install, the user drills a hole in the gypsum board, drywall or other similar material and inserts the anchor into the hole. When the screw is screwed into the anchor body, the anchor body is compressed and expanded, and the blades spread outward and contact the wall material to form a solid support surface.

2. Expansion Mechanism
When the screw is tightened, the blades inside the anchor body spread outward to form a support surface that is in close contact with the wall material. This expansion mechanism allows the anchor body to spread the load over its entire length, thereby increasing its load-bearing capacity. For example, some models of Hollow Wall Anchors can support up to 15 kg, while the support capacity for double-layer gypsum board can reach 25 kg and triple-layer gypsum board can support 35 kg.

3. Load Transfer and Stability
The Hollow Wall Anchor distributes the load evenly over a larger support surface through its extended blades or wings, thus avoiding damage caused by single-point force. This design not only improves the stability of the anchor, but also prevents it from being pulled out of the wall.

3. Applicable Scenarios
The Hollow Wall Anchor is suitable for a variety of materials, including gypsum board, drywall, concrete blocks and hollow bricks. Its design makes it particularly suitable for installing items with light to medium loads, such as small cabinets, towel rods, curtain rods, electrical equipment and mirrors.

4. Ease of Operation
Users only need to drill holes, insert the anchor body and tighten the screws to complete the installation. Some models of Hollow Wall Anchor are also equipped with a spring-loaded mechanism, making the installation process more convenient. For example, Kaptoggle Hollow Wall Anchors use a spring-loaded switching mechanism that automatically expands after the screws are tightened.

5. Reusability
A notable feature of the Hollow Wall Anchor is its reusability. Once installed, the screw can be removed and reinserted while the anchor retains its hold