About this item. SET OF 16 - This set includes 16 large curtain rings with clips, eyelet rings for curtains. the clips are removable, you dont need a lot of resistance, but an easy-open curtain clip to hang your drapery panels. DIMENSIONS - Curtain ring eyelet inside diameter 50mm, outside diameter 58mm, for installation dimensions of this curtain ring, check third picture. STRONG CONSTRUCTION - OOTSR Drapery Rings are made of heavy duty metal with strong tension ties. They are easy and convenient to use. BEST FINISH - Decorative and made of premium metal with a durable plating for long lasting durability. The black finish is consistent, without marbling or chipping, and the strength of the metal is ideal. SMOOTH SLIDE - Simply slide the curtain rings over your rod and secure the drapery. Slides easily and maintains the weight of the curtain. Easy open clips and story rings.