G25-147 G25147 Maxillofacial Surgical Drill Bit – 0.8mm Diameter, 20mm Drill Depth, 30mm Length G25-148 G25148 Maxillofacial Surgical Drill Bit – 1.3mm Diameter, 20mm Drill Depth, 30mm Length G25-149 G25149 Maxillofacial Surgical Drill Bit – 1.6mm Diameter, 20mm Drill Depth, 30mm Length