G1/4" Matt Black Compression Fitting For ID 8MM OD 11MM Tube 1.True Hi-Flow Design. 2.Hi-Quality Brass Material. 3.High Quality E-Plated Finished In Deep Black Color. 4.Hiding O-Ring Design. 5.Design For Tube ID 8MM OD 11MM Application. 6.RoHS Compliant. Thread : G1/4" Thread Length : 5MM Tubing Size : ID 8MM OD 11MM