Standard size fit: These metal shower curtain rings have an inner diameter of approximately 2 inches and fit most standard size shower curtain rods. Please make sure your bathroom shower curtain rod is the right size before purchasing. Anti-slip closure design: Are you tired of your shower curtain always slipping off the shower curtain hooks? Then this closed shower ring for curtain can solve your troubles. You can slide the shower curtain with ease without worrying about it slipping off. Premium metal & : These round shower curtain hooks are made of high-quality metal material, yet sturdy and . And the is treated by electroplating process, which is beautiful and rust-proof to a certain extent. Smooth sliding & less tangled: The smooth of these curtain rings ensures they glide easily on the shower rod. The simple design of metal shower curtain rings prevents them from stuck together as they slide. Multipurpose: In addition to hanging shower curtain and liner, these black shower hooks rings can also support other uses, such as hanging window curtains, clothing, keys, kitchen utensils, small items, etc. They can also be used as a binder rings.