Made of strong flexible PVC for a tight fit. Reusable, easy-to-install. Best method for sealing test pipes, pipe ends, and cleanouts. Used for repair or alteration of drain, waster, or vent pipe and fittings. Fits cast-iron, steel, plastic, lead, and copper pipe. Especially suited for in-wall or other limited space connections. Extra length allows easy replacement of elbows or tees cut out at joint.