Solid curtain rings: All these 12 pack of curtain rings are made of quality plastic with solid construction; They feature good bearing ability, and not easy to deform. Multi-use: The curtain rings can be widely applied for most kinds of curtains, such as shower curtain, window curtain, French curtain and so on; And these curtain hooks can be applied on curtains that have a heading tape, curtain tracks that use gliders with loops and curtain pole rings that have loops. Easy to use: You can easily install them, simply make curtain rings go through curtain rods one by one, and hang the curtain hooks into the small rings of these curtain rings, then you can slide the curtain easily.