3-1/8″ Diameter x 7/16″ Thick, Series 6, HSS (M4) Spade Drill Insert TiN Coated

3-1/8″ Diameter x 7/16″ Thick, Series 6, HSS (M4) Spade Drill Insert TiN 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)