Hooshing 10PCS Compression Tube Pipe Fitting 5/16" Tube OD x 5/16" Tube OD Connector Brass Straight Coupling Adapter

["SOLID BRASS: Quality brass for corrosion resistance, high temperature ductility and low magnetic permeability. Dual couplings for joining two tubes of the same diameter","FUNCTION: Compression union for connecting two 5/16 inch compression fitting tubes together. Connecting and disconnecting two tubes more easily than with a coupling","THREE PIECE CONSTRUCTION: Nut, sleeve and body with attached insert use with copper, brass, aluminum, or plastic tubing","WIDELY APPLICATION: Good sealing and repeatability, temperature and pressure resistance. Applied in the Fuel, Air, Liquid, Oil, Gas, Vacuum, refrigerator water Lines","PACKAGE QUANTITY: 10Pack 5/16\" x 5/16\" Tube OD Compression Fitting Union Adapter"]