SD Series, 60" Pro-Coat Epoxy Coated, Stainless Steel Gas Appliance Connector, 3/8" I.D. x 1/2" O.D. Tube, 1/2" Female Pipe Thread x 1/2" Male Pipe Thread, Product Comes in Resealable Ziplock Bags, AGA Approved & IAS Design Certified For Indoor/Outdoor Use, Recommended For Forced Air Heaters, Gas Ranges, Furnaces, & Water Heaters, Replaces Item #468-942.