These brass pipe fittings are designed for fast, secure push-fit connections in plumbing and water line applications. They are compatible with PEX, copper, and CPVC pipes, making them useful for heating systems, shower systems, and outdoor hose connections. Made from solid lead-free brass, they offer durable performance with resistance to corrosion and high temperatures. The push-fit design allows quick installation without welding, clamps, or adhesives. This 12-piece set also includes two pipe pullers for easier removal and reuse.