Tungsten carbide rod ke boima bo phahameng, sehlahisoa se matla haholo seo thepa ea mantlha e leng WC, le tse ling tsa tšepe ea bohlokoa.E ikhethang ka li-bar tsa tungsten carbide round, tse nang le mohala o ikhethang oa sehlahisoa oa rod e pholileng le e tiileng ea carbide, re u etsetsa le ho u fa thepa ea lithupa tsa carbide tse sa fatše le tse fatše.Lithupa tsa rona tsa h6 tse bentšitsoeng tsa chamfered carbide ke tsona tse tsebahalang haholo.