Applicability: The metal curtain ring is suitable for rods with a maximum diameter of 35 mm (1-3/8 inch). The brushed nickel finish blends beautifully with a variety of curtains and decorations. Metal Curtain Ring: The 38 mm inner diameter curtain rings are made of stainless steel and have a smooth surface for easy sliding of curtains. Easy Installation: Just pass the metal curtain rings through the rods one by one and hook the curtain rings into the small rings of these curtain rings, then you can slide the curtain easily. Widely Used: The 38 mm curtain rings are suitable for most types of curtains such as shower curtains, window curtains, patio door curtains, and more. Package Includes: 50 pieces heavy metal curtain rings included, enough for daily life and replacement.