Umbhobho wombhobho ongu-0.4mm uthetha ukuba ubukhulu bomngxuma wombhobho oyi-0.4mm. Phakathi kwemibhobho efafaza ulwelo, i-0.4mm ubukhulu bomngxunya wokutshiza unokuvelisa imilo enje yenkungu, ekwabizwa ngokuba ngumlomo wombhobho.

Ububanzi bomngxunya wokutshiza wombhobho unolwalamano olukhulu nobungakanani bamasuntswana elulwelo olutshiziweyo. Umzekelo, xa ububanzi bomngxunya wokutshiza ungaphantsi kwe-0.6mm, ifom yokutshiza iyinkungu ngokubanzi. Xa ububanzi bomngxunya wokutshiza ungaphantsi kwe-2mm, ifom yokutshiza ngokubanzi ifana nemvula elula. Xa ububanzi bomngxunya wokutshiza ungaphantsi kwe-5mm, ipateni yokutshiza ngokubanzi iyafana nemvula emodareyithayo, njalo njalo, inkulu ubukhulu bomngxunya wokutshiza, inkulu inqanaba lokuhamba kokutshiza, kunye nelikhulu lethambeka lokutshiza.