Made in USA 303-0.3125 Solid Pilot Counterbore: 0.507" Dia, 0.343" Pilot, 4 Flutes
Solid Pilot Counterbore: 0.507" Dia, 0.343" Pilot, 4 Flutes 5/16" Socket-Head Cap Screw Compatible, 3/8" Shank Dia, 6-1/8" OAL, High Speed Steel (MOQ=1, Pkg Qty=1)
Not Cancelable or Returnable!