1.Hang both shower curtain and liner: The double-sided design of these shower curtain hooks enables you to hang a shower curtain and a liner at the same time. Made of durable metal material, they are sturdy enough to hold heavy curtains and liners flawlessly. 2.Easy to use: These shower curtain rings allow you to hang or remove your shower curtain and liner quite easily. It takes just a few minutes to install and the unique design will prevent them from falling off. 3.Smooth sliding function: Glides easily without friction on the shower curtain rod due to five special roller balls on each hook. These shower curtain hooks can prevent snagging and tugging when pulling your shower curtain and liner open and closed. 4.Rust resistant durable: Composed of high-quality metal material and plated with a layer of durable rust-resistant coating, these shower curtain hooks will be long-lasting. 5.Set of 12 shower hooks: The 12-pcs shower curtain hooks set will work on most standard sizes of shower curtain rods.