I-Bi-metal band sarha iincakuba zigubungela uluhlu olubanzi lwezicelo zokusarha kunye nemathiriyeli. Kwaziwa ngokuba ziiblawudi ze-M42/M51, ezi zibonelela ngeendleko-zokusebenza, ukusebenza okuphezulu, kunye nobomi obubalaseleyo bokudinwa. Olu luhlu oluphezulu lwamashishini kunye neendawo zokuhlala ludibanisa ukuguquguquka kwe-spring-steel backer kunye nokumelana nokuxhatshazwa kwe-M42 / M51 yezinyo zensimbi eziphezulu.