These shower curtain rings are rust proof, they are made of high-quality material, lightweight yet sturdy. These decorative shower curtain hooks are strong enough to hold a heavy shower curtain. The smooth surface of these shower curtain hooks ensure they glide easily on the shower rod. The simple design of these shower curtain rings prevents them from getting stuck together as they slide. This set includes 12 Premium Shower Curtain Rings. Each shower curtain rings measures 2.25" inches. MATERIALS: These shower curtain rings are made of plastic so that you never have to worry about rust in your shower! Easy to snap closure to keep your shower curtain or liner from falling off.