4. Strong Hold When installed correctly, expanding plastic screw anchors provide a secure hold, allowing users to hang objects confidently without worrying about them falling.

1. Material Composition The “1% 201% 4%” typically indicates a specific ratio of metals used in the alloy, such as stainless steel or another corrosion-resistant material, which enhances durability. Stainless steel screws resist rust and corrosion, making them ideal for settings exposed to moisture or chemicals.