These hooks feature specially engineered spherical balls to reduce friction and allow effortless gliding across the rod with virtually. Unique and secure shower curtain rings design ends that frustration and wear and tear on your shower curtain. Each shower curtain hook has a ring shape that snaps closed, ensuring the curtain and liner will remain secure even when someone-yanks it. Our shower curtain rings are made of stainless steel, it won't rust during the period of use.