Published by on 8 de agosto de 2026 DASK Drill #1~5 : Drill speed 800 to 1,200 rpm, 30~45Ncm with internal irrigation. DASK Drill #6 : Drill speed 800 to 1,200 rpm, 30~45Ncm with external irrigation. All the drills are internally irrigated to create an umbrella effect to reduce the risk of a potential perforation to the sinus.