According to an embodiment, a drill member for making a blind hole in a bone under a soft tissue for installing an implant is disclosed. The drill member includes a stepped drill bit that includes a conical section, an intermediate section and a proximal section. The drill bit includes a conical width of a conical profile including an extrapolated outer surface of the conical section, an intermediate width of an intermediate profile comprising an extrapolated outer surface of the intermediate section and a proximal width of a proximal profile comprising an extrapolated outer surface of the proximal section. The conical width and/ or intermediate width is smaller than the proximal width. The proximal profile comprising the proximal width is adapted to receive at least a part of a first section of a drill head of a second drill member.
