It depends on which screw you have chosen to use to install the hybrid base. If you have used the Elos Accurate Hexalobular Prosthetic Screw you use Elos Accurate Prosthetic Screwdriver. That screw is the only one you can use if you have angled screw channels. For straight screw channels you can also use the Elos Accurate Prosthetic Screw and in that case you need to use the screwdriver from the implant manufacturing company.