KF-50 304 STAINLESS STEEL HINGE CLAMP - This 304 stainless steel hinge clamp is designed to fit provide convenience and functionality. KF-50 VACUUM PIPE FITTING - Each stainless steel clamp vacuum pipe fitting works with a centering ring to ensure a strong vacuum seal that creates a leak-free bond. KF-50 CORROSION RESISTANT PIPE FITTING - This corrosion resistant stainless steel hinge clamp pipe fitting is corrosion resistant to promote a long-lasting system. KF-50 304 STAINLESS STEEL HINGE CLAMP QUICK FLANGE FITTING - This 304 stainless steel hinge clamp commonly known as Òquick flange fittings,Ó the Stainless Steel Hinge Clamp is designed for quick assembly for all vacuum fittings that meet ISO-KF standards. COMPATIBLE WITH FORELINE VACUUM PLUMBING & PROCESS SYSTEMS - Complete all foreline vacuum plumbing and process systems with the durable 90-degree elbow fitting.