110 Inch Size Uni One-touch Fittings Series KQ2 Applicable Tubing: Inch Size, Connection Thread: Rc, G, NPT, NPTF Inch Size Uni Metric Size Uni Inch Size R Inch Size NPT Metric Size R, Rc Metric Size G Inch Size M, R, Rc Inch Size UNF, NPT Metric Size M, R, Rc Gasket Seal Face Seal Sealant/Gasket Seal KQ2 H 05 U01 A One-touch fittings Model Thread material/Surface treatment Applicable tubing O.D. Port size KQG U01 Gasket for Uni One-touch fittings Applicable port size How to Order Gasket Spare Parts How to Order Symbol Size U01 Uni1/8 U02 Uni1/4 U03 Uni3/8 U04 Uni1/2 Symbol Size Thread connection U01 Uni1/8 U02 Uni1/4 U03 Uni3/8 U04 Uni1/2 Symbol Size 01 o1/8" 03 o5/32" 05 o3/16" 07 o1/4" 09 o5/16" 11 o3/8" 13 o1/2" Symbol Thread material/Surface treatment A Brass N Brass + Electroless nickel plated Symbol Model H Male connector L Male elbow T Male branch tee W Extended male elbow Y Male run tee U Branch “Y” Threaded Type