The hooks are made of plastic materials that are rugged and durable, so you can buy and use them with confidence. It can be used to hang small baskets, plant pots or watering cans to keep your flowers in order. Easy to install, just plug in the roof access and tighten to install, saving time and effort. It can be used to support grape crops or to maintain a spray system, it is a good helper for gardening. It is used to keep the foam packaging in the winter and keep the sunshade in the summer to make the plants grow better.