HSS Workshop Grade
3 Flute Solid
Cutting Action is Chatterless
Designed to create a recess for socket cap screws
various sizes

21PC COUNTERBORE SET

PILOTS 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8.5, 9, 9.5, 10, 10.5MM

COUNTERBORES 8.5MM, 9.5MM, 10.5MM, 11.5MM, 13.5MM, 16.5MM

1 STRAIGHT SHANK HOLDER

COMES IN FITTED WOODEN BOX