21mm 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

21mm Diameter x 4mm Thick, Series 1, Carbide C5 (P40) Spade Drill Insert TiN Coated

Multipurpose GenometryIncrease wear resistance over M4 and T15For general use in carbon steel and alloy steelsPoint Angle  - 132 degree

21mm Diameter x 4mm Thick, Series 1, Carbide C2 (K20) Spade Drill Insert TiN Coated

Multipurpose GenometryIncrease wear resistance over M4 and T15For general use in Gray cast iron, aluminum and non-ferrousPoint Angle  - 132 degree2pcs/package