20 LED copper string light, with a standard bottle stopper, suitable for most bottles. Put the light in a glass bottle, make the bottle become a wonderful decorative craft light! The LED string is 6.6ft long, it's made with a fine bendable copper wire that can conform to any shape you want, and add a beautiful decorative accent. Made of high copper wire, flexible, IP65 waterproof, durable for daily use. Low heat generating, energy-saving and environmentally friendly, safe to use. Perfect for positioning lights to any decorative or holiday project, suitable for party, square, garden, indoor decoration, outdoor decoration, etc.