ProCut 5/8″ Screw Size Aircraft Square Interchangeable Pilot Counterbore
PROCUT HSS INTERCHANGEABLE PILOT AIRCRAFT COUNTERBORE Tool Diameter5/8″ Shank Size (SS)1/4″ Pilot Drill Diameter (PDD)1/8″ For Screw Size5/8″ Overall Length (OAL)2-13/16″ Cutting Edge MaterialHSS Shank Length (LS)7/8″ Product FeaturesRemarks•Interchangeable Pilot Aircraft Counterbores •High Speed Steel •1/4 Shank With set screw to hold pilots