Umshini usetshenziselwa ukuhlukanisa ngokulinganayo isikhumba esiqinile nesithambile kubukhulu obudingekayo embonini yemikhiqizo yesikhumba, ububanzi bayo buyi-420mm kanye nobukhulu obungu-8mm. Ingakwazi ukulungisa ngokuzenzakalelayo ubukhulu bezingcezu ezihlukanisayo ukuze ithuthukise ikhwalithi yemikhiqizo namandla okuncintisana ezimakethe.