Hard Tubing; Applicable Standard NSF 61G; Outside Diameter 1-3/8"; Inside Diameter 1-1/4"; Wall Thickness 0.065"; Length 20'; Material Copper; Material Specification ASTM B88, ASTM B306, ASTM B819; Weight 1.04 Lb Per Ft; Application Plumbing, Refrigeration, HVAC Industries, Medical Gas; Type K