A. Material: The curtain rings with hooks are made of metal. After fine grinding, they are durable, rust-resistant, slide smoothly, and won't damage the curtain rods. They are suitable for most curtain rods and brackets in daily life. The color is an elegant bronze, which suits most curtains. The curtain rings with hooks are serrated and have a strong biting force, which can fix thick curtains well. You can also use clips where needed. B. Easy to use: For the bronze curtain rings, simply remove the clip and pass the hook through the eyelet to easily open and close the curtains. C. Uses: The curtain clips are suitable for hanging ordinary curtains, French curtains, etc., and can add a touch of refinement to any room. The metal curtain rings are made of durable metal with a non-porous surface, which can inhibit the growth of bacteria, so they can be used for many years without rusting. They are suitable for hanging curtains, home decoration, ordinary curtains, shower curtains, French curtains, etc. The bronze curtain clips can add a touch of refinement to any room and are suitable for bedrooms, living rooms, dining rooms, offices, or kitchens. D. Size: The inner diameter is 32 mm. E. Package contents: 40 curtain rings. F. Precautions: Not all metal rods are the same size. Therefore, please measure the size of the metal rod to ensure that the ring meets your needs.