Union Butterfield 6005535 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 1/2 in Dia Bore, 1/4 in Dia Shank, 2-13/16 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 1/8 in
Union Butterfield 6005535 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 1/2 in Dia Bore, 1/4 in Dia Shank, 2-13/16 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 1/8 in