Dreamslink Roller Ball Shower Curtain Rings Set of 12 in Chrome Heavy duty chrome and stainless steel allows years of use in the harsh bathroom elements Roller ball shower curtain rings are designed to fit 3/4" to 1-1/8" diameter curved, straight, or custom shower rods Sold as a set of 12 for a standard 60" or 72" opening,Nickle Plated or Chrome Polished Innovative design allows our shower curtain hooks to truly glide effortlessly on any shower curtain rod - only a light tug is required to open or close the curtain 5-Roller design has been perfected over the years and allows the double shower rings to glide smoothly