Likotoana tsa ho phunya hollow li boetse li tsejoa e le core drill bits, hole openers, center drill bits, steel plate drill bits, magnetic drill bits, rail drill bits, joalo-joalo.
Lisebelisoa tse ka sehloohong tsa lisebelisoa tsa ho cheka ke: tšepe e phahameng;metallurgy ea phofo;carbide e entsoeng ka samente.
Likotoana tsa ho cheka li na le mefuta e fapaneng le litlhaloso 'me li loketse mefuta e fapaneng ea li-drill tse tsoang kantle ho naha (magnetic drill) le mechini e akaretsang ea ho phunya, metjhini e hlabang, metjhini e tenang, joalo-joalo. cheka, 'me katleho ea ho cheka ke makhetlo a 8 ho isa ho a 10 ho feta a likotoana tse tloaelehileng tsa ho cheka.