Izi ndi ndolo zooneka ngati mabotolo amankhwala. "Rx" ndi chizindikiro cha mankhwala olembedwa, omwe nthawi zambiri amapezeka m'mabotolo a mankhwala. Mphete zamtundu uwu zimakhala ndi mapangidwe apadera ndipo zimapangitsa kuti zinthu zachipatala zikhale zapamwamba. Zinthuzo ndi aloyi, yomwe imapangidwa ndi electroplated kuti iwonetse maonekedwe a golide, ndipo mawonekedwe apamwamba amaperekedwa mumtundu pogwiritsa ntchito njira yolimba ya enamel ndi kusindikiza.
