Ring Inner Dia.: 8mm/0.31"; Mouth Max Width: 10mm/0.4"Main Color: Black; Package Content: 10pcs x Curtain ClipProduct Name: Curtain Clip; Material: MetalWeight: 25gDimension: 32 x 9 x 12mm/1.3" x 0.35" x 0.5"(L*W*H)Constructed of strong metal material for durability.Multi-purpose, perfect for hanging photos, drapes, curtains and many other home usesYou can hang them on any rail with 8mm diameter or you can hang them on bigger rings. You also can clip on anything fits the clip head opening