Izicucu zethu zamabhethri zenziwe ngensimbi ye-tungsten enobunzima obuphezulu futhi zenzelwe ngqo ukusika ngokunemba izingcezu zezigxobo zebhethri le-lithium kanye nezihlukanisi. Ama-blade azo abukhali, angagugi akhiqiza ukusikeka okubushelelezi, okungenama-burr, okususa ngempumelelo ama-burr nothuli, okuqinisekisa ukusebenza kahle kwebhethri. Isicucu esinqamulayo singasetshenziswa nesiphathi samathuluzi esifanelanayo ukuze kube lula ukusifaka nokusebenza okuzinzile, okwenza kube lula kakhulu ekusikeni nasekubumbeni izinqubo ekukhiqizweni kwebhethri le-lithium.
