Pot Magnets kuma ana san su da Round Base Magnets ko Round Cup Magnets, RB Magnets, kofin maganadisu, manyan taro ne na kofin maganadisu wanda ya ƙunshi neodymium ko ferrite maganadisu a cikin kofin karfe tare da ramin hawa ko ƙima.Tare da wannan nau'in ƙira, ƙarfin riƙe da maganadisu na waɗannan majalissar maganadisu yana ninka sau da yawa kuma yana da ƙarfi sosai fiye da maganadisu ɗaya.
Tukwane maganadisu na musamman maganadiso, wanda musamman ma manya, ana amfani da su a cikin masana'antu a matsayin masana'antu maganadiso.Magnetic core magnets na tukunya an yi shi ne da neodymium kuma an nutse shi a cikin tukunyar ƙarfe don ƙara ƙarfin mannewa na maganadisu.Shi ya sa ake kiran su da maganadisu “tukunya”.