Anowanzo shandiswa masiraidhi ane marudzi maviri: flange type, uye square type. Iyo yekutanga idiki zvishoma, asi yakawedzera kupararira, uye gomba rekukwira igomba rakarukwa, nepo rekupedzisira riri pakakwirira uye rakatetepa, uye gomba rinokwirisa igomba reshinda. Ose ane mhando pfupi, yakajairika mhando uye elongated mhando, mutsauko mukuru ndewekuti kureba kwemuviri wekutsvedza kwakasiyana, hongu, nzvimbo yegomba rekukwira inogonawo kunge yakasiyana, mazhinji mapfupi mhando inotsvedza inongove nemakomba maviri anokwira.