Inner dia. approx: 30 mm /1.2 inchOuter dia. approx: 37 mm /1.5 inchColor: Coppe r, Brass, White, Black, SilverPacakge Included: 6/12/24/36/48/60/72/84/96* Curtain RingsMaterial: Metal Rings To match as much as 25 TO 28 mm Curtain Rods.Incorporates small ring to connect curtain hook Strong metal, compatible for most weighted curtains.Nice polished and gentle surface without burrs, get rid of snagging, tugging and pulling of the curtainSmooth Gliding Curtains with these Rings, Curtain rings go through the curtain rod, and curtain hooks into the small ring, then you can attempt to sliding the curtain easilyCurtain rings to hold curtains and draperies, curtain rings wide utilized for most sorts of curtains, such as shower curtain, window curtain, french window curtain and so on.