Post Insulator e khethehileng bakeng sa libaka tse silafetseng hampe, khatello e phahameng ea khatello ea mochini, bolelele ba nako e telele le mohala oa motlakase o kopaneng. E na le tšobotsi ea boima bo bobebe, molumo o monyane, o ke keng oa robeha, anti-bend, matla a phahameng bakeng sa ts'ireletso e khahlanong le ho sotha le ho phatloha ho matla.