API Mill haƙoran haƙora IDC217 12 1/4 inci (311mm) don hako rijiyar

Tricone bit wani muhimmin kayan aikin hakowa ne don hako mai, aikin sa zai shafi ingancin hakowa kai tsaye, ingancin hakowa da farashin hakowa.Aikin hako mai da hakowa na kasa shine mafi yawan amfani da mazugi.Abun mazugi yana da tasirin girgizawa, murkushewa da yanke kafawar dutsen a juyawa, don haka za a iya daidaita mazugi zuwa laushi, matsakaita da wuya.Musamman a cikin jet mazugi bit da dogon bututun ƙarfe bayan bullowar mazugi, gudun hako mazugi ya inganta sosai, shi ne tarihin ci gaban mazugi bit wani babban juyin juya hali.Za a iya raba mazugi zuwa hakora (haƙori) ta nau'in haƙori, hakori (bit) (haƙori da aka saita tare da haƙoran carbide) mazugi bit;bisa ga adadin hakora za a iya raba zuwa guda mazugi, biyu , Uku-mazugi da Multi-mazugi bit.A gida da waje ana amfani da mafi yawan, wanda ya fi kowa shine Tricone bit.