18.5mm Diameter x 4mm Thick, Series 1, Carbide C3 (K10) Spade Drill Insert TiAlN Coated

Cast Iron GenometryIncrease wear resistance over M4 and T15high performance in Gray cast iron over 220 Brinell, malleable cast iron with short chips, silicon aluminum and coppor alloysPoint Angle  - 132 degree

18.5mm Diameter x 4mm Thick, Series 1, Carbide C3 (K10) Spade Drill Insert TiN Coated

Cast Iron GenometryIncrease wear resistance over M4 and T15high performance in Gray cast iron over 220 Brinell, malleable cast iron with short chips, silicon aluminum and coppor alloysPoint Angle  - 132 degree