2-15/16" Diameter x 7/16" Thick, Series 5, HSS (M4) Spade Drill Insert Hardslick Coated

General purpose insert for most materials Not recommended for tool steels and high temperature alloys High toughness for loose or manual machines Point Angle  - 132 degree, (Series 5-8 : 144 degree)

3-31/32" Diameter x 7/16" Thick, Series 7, Super Cobalt (T15) Spade Drill Insert Hardslick Coated

Increase wear resistance over M4 For use in medium carbon steel to high temperature alloys Performs best in rigid setups Point Angle  - 132 degree, (Series 5-8 : 144 degree)

2-31/32" Diameter x 7/16" Thick, Series 5, HSS (M4) Spade Drill Insert Hardslick Coated

General purpose insert for most materials Not recommended for tool steels and high temperature alloys High toughness for loose or manual machines Point Angle  - 132 degree, (Series 5-8 : 144 degree)