GRABOTE Upgraded 12 Pack Inverted Flare Tube Nut for 5/16" Tube (1/2-20 threads)

["For 5/16\" Tube 1/2-20 Threads (standard 5/16\" tube fitting size) Standard Steel Most common SAE inverted flare sizes Plated for corrosion resistance","made of high strength carbon steel for enhanced durability.","Direct replacement for a proper fit and easy installation, quality materials used, 100% tested before shipping.","Customer Service:Please feel free to contact with us if there is any question about anything, we will reply in 24 hours to help solve the problem.","Package Includes: 12Pcs Inverted Flare Tube Nuts"]