The self drilling wall anchors will expand when you install, providing strong bearing capacity and safey. The screws are made of zinc plated steel, resist to corrosion, rust and oxidation. 【FEATURES】These drywall anchors have good elasticity and tensile strength, no cracking, high hardness, strong expansion force, no sliding in wall holes, practical, wide application range, easy to install and use, can improve work efficiency.
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