Drill America DEWCBR Series Qualtech High-Speed Steel Pilot For Counterbore, 1/2 Shank Diameter, 2-3/4 Length, 1 Size (Pack Of 1)

Drill America Qualtech DEWCBR series aircraft counterbore. Counterboring is the enlargement of a portion of a hole that has previously been formed. If, on the other hand, the hole is enlarged to a considerable depth, it is designated as counterboring. This counterbore is made of two-piece construction, having an integral shank and counterbore-cutter, and a pilot that is interchangeable, which provides flexibility in the use of the tool. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Round shanks allow use with a wide variety of toolholding systems. Aircraft counterbore High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance Round shanks allow use with a wide variety of toolholding systems