• Curtain ring set: 20 curtain rings and 20 transparent plastic curtain hooks, enough for daily use and replacement. • Size: the inner diameter of the curtain is 30 mm, fits curtain rods less than 27 mm. • Good performance: move the curtain easily and quietly thanks to the sliding inserts in the rings. • Easy to install: simply use the metal hook to hang the curtain. • Widely used: can be used for most types of curtains, such as shower curtain, window curtain, etc. • Specifications: outer diameter 3.7 cm, inner diameter 3.0 cm. • Material: metal and plastic. • Quantity: 20 units of each type. • Tips: keep out of reach of children and check the size before purchasing.