Perfect for Applying to Hard Ground: This light poles have welded base plates with 3 holes which is suitable for the hard ground such as wood and concrete securely and without any bending or shaking from strong breezes. NOTE: If you need to fix the string lights pole on the lawn soil or fence deck, please choose another style. Rust-proof Light Poles: The Sprimden Christmas light pole is made of high-quality, the black powder-coat finish ensures rustproof and is strong and sturdy enough to handle all environments. Please make sure the pole is 100% tight when using.