16 Ago 37.0mm Diameter x 6.4mm Thick Series #3 HSS (M4) Spade Drill Insert TiAlN-Coated
YG-1 Spade Drill Inserts - M4 High Speed Steel. For general purpose use most materials. High toughness for loose or manual machines. Series Y to Series 4 Have 132Deg Point Angle. Series 5 to Series 8 have 144Deg Point Angle....