Ububanzi bangaphandle bombhobho ongenamthungo ogoqwe ngobushushu ngokubanzi bungaphezulu kwe-32mm, kwaye ubukhulu bodonga buyi-2.5-200mm. Ububanzi bangaphandle bombhobho wentsimbi engenamthungo ogoqwe ngobandayo bunokufikelela kwi-6mm, kwaye ubukhulu bodonga bunokufikelela kwi-0.25mm. Ububanzi bangaphandle bombhobho onodonga oluncinci bunokufikelela kwi-5mm kwaye ubukhulu bodonga bungaphantsi kwe-0.25mm.

Umbhobho wentsimbi engenamthungo osetyenziswa ngokubanzi wenziwe ngentsimbi ye-10, 20, 30, 35, 45 kunye nezinye intsimbi ebotshelelwe ngekhabhoni ekumgangatho ophezulu eyi-16Mn, 5MnV kunye nezinye intsimbi yesakhiwo engaphantsi kwe-alloy okanye eyi-40Cr, 30CrMnSi, 45Mn2, 40MnB kunye nezinye intsimbi ebotshelelweyo eshushu eqengqelekayo okanye ebandayo eqengqelekayo. I-10, 20 kunye nezinye intsimbi yekhabhoni ephantsi yokuvelisa umbhobho ongenamthungo isetyenziselwa ikakhulu umbhobho omanzi. I-45, 40Cr kunye nezinye intsimbi yekhabhoni ephakathi eyenziwe ngombhobho ongenamthungo ukwenza iindawo zoomatshini, ezifana neemoto, iindawo ezixineneyo zeetrektara. Ukusetyenziswa ngokubanzi kombhobho wentsimbi engenamthungo ukuqinisekisa amandla kunye novavanyo lokuthamba. Iipayipi zentsimbi ezigoqekileyo ezishushu zihanjiswa zikwimeko eshushu egoqekileyo okanye ephathwa ngobushushu. Ukuhanjiswa okubandayo kunyangwa ngobushushu.