The 4PC Countersink HSS-G Titanium Drill Bit Set is designed for precision and durability. Ideal for countersinking screws and fixings, this set features adjustable depth and titanium-coated drill bits for extended tool life. Includes : 4 countersinks with pilot drill bits Adjustable Depth : Allows for accurate countersinking by loosening and tightening the collar Material : HSS-G twist drills with titanium coating Coating : Titanium coating reduces friction and increases service life Finish : Sharp cutting flute ensures a clean, smooth finish