Rust Resistant: Our shower curtain rings are made of zinc alloy and will never rust. Durable and Strong Hooks: The hook uses 5mm metal wire, which is strong enough to support shower curtains and other heavy objects, and can hold a maximum weight of 23kg. Good Design: Our unique S-shape design, which reduces friction and tearing, slides easily and smoothly on any diameter. The end ball of the hook is designed to stay on the rod and will not fall off. Wide Range of Uses: Not only for shower curtains, but also for hanging towels, pots and pans, coffee cups, clothes, plants in the bathroom, kitchen, bedroom, office and garden, etc.