Uhlobo lwe-ferrule lunezici zokuxhumeka okuphephile, ukumelana kwengcindezelo ephezulu, ukumelana kahle kwezinga lokushisa, ukubekwa uphawu kanye nokuphindwayo, umsebenzi osebenzayo, njll. Umsebenzi osebenzayo, sebenzisa i-tube futhi ulinamathisele. Ixhumeke kwishubhu lethusi ngaphandle kokushiswa, okulungele ukuvimbela umlilo, ukuqhuma - Ukufakazelwa komsebenzi kanye nokuqeda amandla, futhi kuqeda ukungabi kwezibi ezibangelwa i-inlding ye-invertent.
