MSC 302-0.8320 Solid Pilot Counterbore: 0.288" Dia, 0.179" Pilot, 4 Flutes
Solid Pilot Counterbore: 0.288" Dia, 0.179" Pilot, 4 Flutes Socket-Head Cap Screw Compatible, 1/4" Shank Dia, 5" OAL, High Speed Steel
$36.64