Got a tubing project that needs to pass through a wall or barrier? These Pysrych 304 stainless steel bulkhead union fittings are up for the job! Each fitting is designed to mount in a drilled hole, allowing you to connect tubing on both sides securely. They work with 1/8 inch outer diameter tubing (like nylon or polyurethane) and use a double ferrule design to minimize leaks. Made from corrosion-resistant 304 stainless steel, they can handle pressures up to 2900 psi and temperatures from -50 to 450°C. Perfect for pneumatic systems, fuel lines, water lines, or industrial applications. You get two fittings in the pack, making it a cost-effective solution. Easy to install with basic tools—just tighten the nut to compress the ferrules onto the tube. Reliable, durable, and built to last!