I-HSS annular cutter ifanelekile ukusika izinto ezinzima.
Umphetho wokusika onokuthi unqumle ngokulula ngesinyithi, iplastiki, kunye nezinye izinto ezinzima.
I-annular cutter nayo yomelele kakhulu, iyenza ibe lukhetho olukhulu lokusetyenziswa kobunzima.