Precise 6 Piece M4-M12 HSS 3 Flute Straight Shank Solid Pilot Counterbore Set - 2007-0001

Precise 6 Piece M4-M12 HSS 3 Flute Straight Shank Solid Pilot Counterbore Set - 3906-0239

• HSS - Made of high speed steel.
• Continuous pilot counterbores cut rapidly, smoothly and accurately, producing long spiraling chips rather than small metal particles.
• The pilot extends the full length of the flute portion of the tool.
• As cutter flutes are ground back due to wear, a new section of pilot becomes exposed.
• The pilot head may be cut off to any desired length when repeated sharpening makes it too long for practical use.
• Continuous pilot counterbores have a life many times that of the conventional type counterbore.