Durable material: the curtain hanging rings are made of quality solid steel, thick and strong, durable and not easy to be torn or fall off, hold the curtain firmly and securely; The curtain hooks are made of zinc metal material, it has pin points in the hooks, be careful to scratch your fingers or getting caught on threads in your header tape Easy to install: just use the metal curtain hanging ring to through the curtain rod one by one, then attach the metal curtain drapery pin hook to the ring, it's finished and you can try to sliding the curtain easily, no other tools required International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.