Ibirimo: 1. Intangiriro 2. Gusobanukirwa Imyitozo ya Hollow Core 3. Inyungu za Hollow Core Drills 4. Porogaramu ya Hollow Core Drills muri Cong Imyubakire 5. Ibintu byo gutekereza mugihe uhitamo Igikomoko cya kabiri 6. Ibibazo bikunze kubazwa (FAQs) 7. Igenzura 1. Intangiriro mugihe bigeze ku mishinga yubwubatsi, Kugira ibikoresho bikwiriye ni ngombwa kugira ngo bigerweho. Imwe nkiyi igikoresho gifite gai