QMINOX Weld Socket Flange KF-50 Vacuum Fittings are the perfect solution for your 2 inch OD tubing needs. This ISO-KF Flange Size NW-50 fitting is designed to provide a secure and reliable connection for your projects. Our Weld Socket KF-50 Fittings are made with high-quality materials and are designed to last. The NW-50 Fittings are perfect for any application that requires a 2 inch OD tubing connection. With our KF-50 Fittings, you can be sure that your project is safe and secure. Invest in QMINOX Weld Socket Flange KF-50 Vacuum Fittings and get the job done right.