High Quality Metal Ring: This shower curtain hooks and rings set is made of high quality durable metal. The non-porous surface resists bacterial attack and will not rust in humid environments. Heavy Duty Curtain Rings. Shower curtain hooks apply to rods up to 39;35mm in diameter, the maximum load is 10kg, strong enough to support a heavy curtain. 5 bearing balls glide smoothly, smoothly and effortlessly. Easy Installation and Use: Gently press to open or close. The specially designed spherical ball design reduces friction and allows effortless gliding on the rods. The curtain hooks hold shower curtains of different thicknesses without deformation. Rust-Proof Coated and Polished: The steel is coated with a rust-resistant material and polished to a shiny chrome finish. The hooks sparkle in the light and give any bathroom a very elegant look. Wide use: The hanging rings with sliding system are made of high-quality, rust-proof metal and can not only be used for bathroom curtains, but also