• Metric Set (7PC): M3, M4, M5, M6, M8, M10, M12
  • 3 Flute
  • High Speed Steel
  • Straight Shank
  • Shank sizes: M3-5.5mm/.218", M4-7.9mm/.312", M5-7.9mm/.312", M6-12.7mm/.500", M8-12.7mm/.500", M110-12.7mm/.500", M12-15.8mm/.625"+

clears those cap screws

These are amazing. Not just amazing because of the price, they are great countersinks, and the low price is an added benefit! Been utilizing countersunk cap head screws a LOT this past summer since buying these. If you are into building your own tooling, these are great to have. The trick to them is low rpm (500rpm or so) and match the through drill bit size to the guide tip on the countersink.

cuts really well & to size , fast delivery