Made in USA. This Pure Stealth Billet Aluminum Non-Floating Quad Line Clamp is designed to secure three #10 Reduced Barrie or E-Z Clip A/C hoses and one #6 Reduced Barrie or E-Z Clip A/C hose securely to a frame rail or an inner fender pane. Perfect for A/C and heater lines. You must use #10 Reduced Barrier or #10 E-Z Clip hose for heater lines. Does not work with standard barrier A/C hose or 5/8" heater hose. Pure Stealth hose separators and line clamps are coated with our proprietary ceramic coating. The coating is extremely durable but it can be scratched. Care should be taken during the assembly and installation process to prevent damaging the coating. Sold individually.