Rust-resistant stainless steel - The heavy duty brass and stainless steel construction allows years of use in the harsh room elements. The stainless steel sWer curtain hooks, non-magnetic metal is corrosion-free, meaning it will last indoors and outdoors without rusting. Pink acrylic balls - The hooks feature acrylic rolling balls with playful pastel pink color. The pink balls add brightness to any style of room and complement any type of room curtain. Acrylic plastic plating ensures that the color will not fade with time. 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 - 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.