Kawirikawiri, zinthu za wodula mphero zimagawidwa kukhala: 1. HSS (High Speed Steel) nthawi zambiri imatchedwa chitsulo chothamanga kwambiri.Zofunika: osati kutentha kwambiri kukana, kuuma kochepa, mtengo wotsika komanso kulimba kwabwino.Nthawi zambiri amagwiritsidwa ntchito pobowola, odula mphero, matepi, ma reamers ndi zina ...
Werengani zambiri