Bykski B-FTJ-XAL-14 Hard Tube Fittings For OD14mm water cooling pipe Boutique Plum Blossom G1/4'' Fast Twist Fittings,
https://www.vogueparade.com/shopping/EN/200001076/1/1005003636821603/bykski-b-ftj-xal-14-hard-tube-fittings-for-od14mm-water-cooling-pipe-boutique-plum-blossom-g14-fast-twist-fittings//