Alvord Polk 03007 Solid Pilot Counterbore: 0.244" Dia, 0.153" Pilot
Solid Pilot Counterbore: 0.244" Dia, 0.153" Pilot 6-32" Fillister-Head Screw Compatible, 0.2188" Shank Dia, 4-5/8" OAL, High Speed Steel
$42.51