IRWIN High Speed Steel Countersinks feature a precision-ground 82-degree tip that makes them ideal for countersinking into most machinable metals. They're made from industrial grade high speed steel for increased durability and they include a black oxide finish for added corrosion resistance. The five flute design reduces vibration for smoother drilling and extended life. Plus, the 1/4" round shank fits all handheld and stationary drills.

• 1/4" round shank fits all handheld and stationary drills
• Five flute design reduces vibration for smoother drilling and extended life
• Includes a black oxide finish for added corrosion resistance
• Made from industrial grade high speed steel for increased durability