Alvord Polk 03006 Solid Pilot Counterbore: 0.228" Dia, 0.138" Pilot
Solid Pilot Counterbore: 0.228" Dia, 0.138" Pilot 6-32" Fillister-Head Screw Compatible, 0.2188" Shank Dia, 4-5/8" OAL, High Speed Steel
$32.85