Four gecko expansion screws are a commonly used fastener, typically used to secure objects to concrete, bricks, or other hard materials. Its structural design allows the four pieces of the gecko to unfold inside the holes when the screws are screwed in during installation, providing stronger fixing force. Here is some basic information about the four gecko expansion screws:

1. Structure: Four gecko expansion screws are usually composed of screws and an expansion sleeve with a four piece unfolded structure. The expansion sleeve will expand outward when the screw is screwed in, increasing the contact area with the hole wall.

2. Materials: Common materials include carbon steel, stainless steel, etc. The selection should be based on the usage environment (such as indoor, outdoor, humid, etc.).

3. Purpose: Suitable for fixing shelves, lighting fixtures, air conditioning, bathroom equipment, etc., widely used in construction, home decoration and other fields.

4. Installation: During installation, it is necessary to first drill holes in the wall, then insert expansion screws into the holes, and finally use tools to screw the screws in. The gecko will unfold in the holes to achieve a fixed effect.

5. Precautions: When selecting and using four gecko expansion screws, attention should be paid to the aperture, load-bearing capacity, and installation depth to ensure the safety and reliability of the fixation.

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