Rust-resistant stainless steel \u2013 The heavy duty brass and stainless steel construction allows years of use in the harsh room elements. The stainless steeMaterial, non-magnetic metal is corrosion-free, meaning it will last indoors and outdoors without rusting. Rust-resistant plated and blue\u2013 The steel is plated with rust-resistanMaterial and polished with blue finish. Adding a very elegant look to any room. Free gilding action - No snagging; no effort; no hassle. These hooks feature specially engineered spherical balls to reduce friction and allow effortless gliding across the rod with virtually no effort at all. Heavy duty closing hooks \u2013 The hooks are strong enough to hold a heavy sWer curtain or liner. They are sealed shut, making it impossible for the curtain to slip off the rings. Set of 24 - Sold as a set of 24 for a standard 60 or 72 inches opening. Note that: sWer curtain rings are entirely different with those cheap rings.