Kingdoo 100% Stainless Steel Shower Curtain Hooks Rolling Beads Bathroom Glide Rings Set of 12 Rings 1. SCIENTIFIC DESIGN - The five subtle and polished metal roller balls on the top will allow you to open or close your curtain with least power, which will protect your curtain from dragging or breaking. Also, the polised round shape on the bottom will keep your valuable curtain from scratching by sharped angles. You can enjoy your favourite curtains with favourite hooks. 2. MATERIAL - The hooks are made from durable, type-304 Non-Magnetic stainless steel and therefore will last for years without rusting.Plus, the fashionable look will not get you bored after years of using. 3. DIY INSTALLATION - These hooks are extremely easy to install with only 3 steps. Open the rings, penetrate the curtains and then hang on the metal rod. Your curtain will be installed in a minute. Also, the rings are closed and will not easily let the curtain down when you pull the curtain. 4. SIZE - The top interior diameter is 1.37inch/35mm. And the ring height 2.75inch/70mm. It can be used for most of the metal rods in bathroom. Also, if the top ring of your shower curtain is not very thick, you can even hang double curtains in our hooks for it will bear at least 5KG curtain with durable 0.08inch/2mm thickness. It can take 5 kg weight at most. 5. SET OF 12 - You can get standard 12 standard hooks in a pack; Also, you can enjoy 30 days unconditional return and 10 years warranty for defected product. If you meet any quality problems with the hooks, you are always backed up by our sincere service.