One touch fitting, equivalent to SMC. Gray color body, long life, easy to mount. Thread with seal gasket or glue. One touch fittings: KQ2H1. KQ2 Series one touch fittings (push in fittings), equivalent to SMC.2. Gray color body, long life, easy to mount.3. Applicable tubing (O.D.): 3.2mm, 4mm, 6mm, 8mm, 10mm, 12mm, 16mm4. Connection Thread: M5×0.8, M6×1.0, 1/8", 1/4", 3/8", 1/2"5. Thread with ...