MettleAir MTMF 8-N02-1PK Push to Connect Straight Bulkhead Female Fitting 8 mm OD, 1/4" NPT Type: Straight Bulkhead Female Connector Model: MTMF 8-N02 Tubing: 8mm OD Thread: 1/4" NPT Female Body Material: Composite/Nickel Plated Brass