Drills DSI Standard Conical Drill External Irrigation FDA APPROVED $44.90 DSI Standard External Irrigation Conical Drill Length 16.0 mm Ø1.8-2.4, Ø1.8-2.8, Ø2.0-3.2 Ø2.5-3.7, Ø2.7-4.0, Ø2.7-4.5 FDA APPROVED View