Easy Installation: 40 pack Christmas light hanging hooks are quick and easy to install, first nail the wood with a hammer, then tighten with a wrench. Widely Used: Q light hanging hooks for outdoor string lights, Christmas light hooks for home, Halloween pumpkins, holiday string lights and patio lights, also perfect for hanging lightweight items, such as potted plants, wall pots, keys, wall decorations. High Quality: Hooks and screws made of 100% permanent 304 stainless steel, wind and rust resistant for lights and other outdoor wire hangers all year round, open loop ensures quick release but extension provides complete safety, the hanging hooks can hold up to 40 pounds, suitable for indoor and outdoor use. Size: 5cm total length, can adapt to many products, 2cm screw length firm. The opening hook diameter is 1.2cm.