Easy way to cap pipe ends, clean-outs, and open test pipes. Made of flexible PVC, they're suitable for above-ground or underground use, on cast iron, steel, copper, or plastic piping. Designed to fit all drain, waste, and vent pipe materials in a given nominal size Avalon | Avalon Rubber Jim Cap w / Stainless Steel Hose Clamp 4" 4.0 W x 4.0 D in gray / yellowStainless Steel in Chrome / Brass | Wayfair 1601-4