Kugirango tumenye uburebure bwurukuta rwa 3/16 tubing, dukeneye kumenya diameter yo hanze (OD) hamwe na diameter imbere (ID) yigituba. Niba diameter yo hanze ari 3/16 ″ kandi nta makuru yihariye yatanzwe kubyerekeye diameter y'imbere, ntidushobora kubara neza uburebure bwurukuta. Ubunini bwurukuta burashobora gutandukana bitewe nubwoko bwihariye bwo kuvoma no gukora.