Irwin 1882792 IRWIN Wood Countersink Bit Set, 8 Piece, 1882792

The IRWIN Wood Countersink Set is perfects for creating variable-sized countersink holes quickly. With tapered drills and widened flutes, these bits have adjustable four-cutter counterbores that attach to flats on the shank to clear chips quickly and can be adjusted to control the pilot hole depth. This set includes No.4, No.6, No.8, No.10, No.12, No.14, countersinks and Depth Stop (2).