They're heavy duty and can be used on internal and external locations. The heavy duty hollow wall anchors will expand when you install, providing strong bearing capacity and safey. 【SIMPLE TO USE】 Screws already been fixed in the anchor bolts, users can easily installed the M4 plasterboard plugs within minutes.Just drill a hole in your plaster wall and insert it until the teeth bite firmly into the sheet material, you can then use a tool to fasten into the wall.
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