20 Pieces Openable Metal Curtain Clip Rings, Easy Open and Close, Inner Diameter 38mm, for Heavy Curtains and Light Curtains (Black) About this product:MATERIAL: These curtain rings and clips are made of solid metal, it has the characteristics of rust, corrosion resistance, and is not easy to deform. SPECIAL OPENING DESIGN: Smooth without burrs, this curtain ring with strong clip can be opened, so you can replace the curtain without removing the rod which is very convenient for you. Can slide the curtain easily. USE RANGE: Widely applied for heavy curtain or light curtain, good for bathroom, bedroom, hotel, restaurant, etc. Not only can be used for hanging curtains, but also can be used for hanging home decor. SIZE: Curtain rings Internal diameter is 38mm, suitable for 33mm curtain rods . (Please confirm the size before purchasing).