Create clean, precise countersunk holes in metal, wood, and plastic with this Irwin 5/8\" high speed steel countersink. The five-flute design reduces vibration for smoother drilling and longer tool life, while the black oxide finish protects against corrosion.

• Head diameter: 5/8\"
• Precision-ground 82-degree tip
• Industrial-grade high speed steel (HSS)
• Five-flute design reduces vibration
• Black oxide finish for corrosion resistance
• Countersinks most machinable metals, wood, and plastic
• 1/4\" round shank fits most drills

Tip: Run at slower speeds when countersinking metal to prevent overheating and extend tool life. Use moderate pressure and let the flutes clear chips naturally.