Alvord Polk 03084 Solid Pilot Counterbore: 0.5315" Dia, 0.3346" Pilot
Solid Pilot Counterbore: 0.5315" Dia, 0.3346" Pilot 0.315" Socket-Head Cap Screw Compatible, 1/2" Shank Dia, 6-1/2" OAL, High Speed Steel (MOQ=1, Pkg Qty=1)
Not Cancelable or Returnable!