Mano opangidwa ndi diamondi (DEC) atha kugawidwa kukhala: mano ophatikizika a diamondi, mano ozungulira a diamondi, mano ozungulira a diamondi, mano ophatikizika a diamondi, mano ophatikizika a diamondi, mano ophatikizika a diamondi, mano ophatikizika a diamondi apamwamba pamawonekedwe ndi ntchito. ndi zina.
Amagwiritsidwa ntchito kwambiri pakukumba zauinjiniya ndi minda yomanga monga ma roller cone bits, tizidutswa tating'onoting'ono, zida zobowola uinjiniya, ndi makina ophwanya. Nthawi yomweyo, magawo ambiri ogwiritsira ntchito PDC bits amagwiritsidwa ntchito, monga mano owopsa, mano apakati, mano a geji, ndi zina zambiri.