6 Pcs Countersink Drill Bit Set with Case 1/4'' Hex Shank HCS 5 Flute Countersink 90 Degree Center Punch Tool Sets for Wood, Quick Change Bit 1/4" 5/16" 3/8" 1/2" 5/8" 3/4"
90-degree tip drills clean, conical holes for screwheads to sit flat. Trailling flute automatically deburrs holes.
1/4" hexagon shank, compatible with most handheld and bench drills.
Five flute design eliminates chatter and vibration, improved efficiency. High carbon steel body with titanium coating, better durability and corrosion resistance
Ultimate bang for bucks: Please be reminded that the tool is NOT suitable for countersinking of hard metal. Ensure sufficient cooling and lubrication during operation.