This product line have big merit, "can get autogenous bone at the same time when drilling sequence to place the implant". Competitor tools just have function collecting bone. In case of hard bone (D1,D2), their tools have little bit malfunction because of thin core drill. one more thing, some dentist want core bone and grinding with other tool by themselves, because they don`t want bone burring. So using trephine, they get core bone first, and grinding. At this time, it is very difficult to remove core bone from trephine. Our tools can separate trephine combining ABM-trephine with ABM-co.