Isikhokelo somgca siquka umzila kaloliwe, ibhloko, izinto eziqengqelekayo, umgcini, umva, isitywina sokugqibela njl.njl Ngokusebenzisa izinto eziqengqelekayo, ezinje ngeerola phakathi kololiwe kunye nebhloko, isikhokelo somgca sinokufikelela kwinqanaba eliphezulu lokuchaneka komgca. Ibhloko yesikhokelo somgca yahlulahlulwe ngohlobo lwe-flange kunye nohlobo lwesikwele , ibhloko yohlobo oluqhelekileyo, ibhloko yokuthwala kabini, uhlobo olufutshane lwebhloko. Kwakhona, ibhloko yomgca yahlulahlulwe kumthamo ophezulu womthwalo kunye nobude obuqhelekileyo bebhloko kunye nomthamo ophezulu womthwalo ophezulu kunye nobude bebhloko ende.