Union Butterfield 6005540 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 1/4 in Dia Bore, 1/4 in Dia Shank, 2-3/8 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 3/32 in
Union Butterfield 6005540 4706 Aircraft Short Straight Shank Interchangeable Pilot Counterbore, 1/4 in Dia Bore, 1/4 in Dia Shank, 2-3/8 in OAL, 4 Flutes, HSS, Pilot Shank Diameter Compatibility: 3/32 in