Made of metal material, being welded and chrome plated, these curtain rings are rust-proof and can be used in humid places. Fastness and durable for use. Installation: Curtain rings go through the curtain rod, and curtain hooks into the small ring, then the curtain slides easily. Application range: Ideal for for holding shower curtains, window curtains and french window curtains. Widely used in bedrooms, bathroom, living room, office, etc. Product Name: Curtain Rings Material: Metal Surface Treatment: Chrome Plated Package Content: 20 x Curtain Rings Notes: 1. Variability of 1-2mm is possible due to the measurement process. 2. Please check the diameter of our curtain ring, to fit your curtain rod before buying this item.