4-1/4" Diameter x 7/16" Thick, Series 8, SV-Point Premium Cobalt (M48) Spade Drill Insert Hardslick Coated

Sinusoidal thinning edge for smooth cuttingPositive rake angleFor use in high temperature alloys and materials over 350-500 Brinell Performs best in rigid setups Point Angle  - 132 degree, (Series 5-8 : 144 degree)

4-1/4" Diameter x 7/16" Thick, Series 8, SV-Point Super Cobalt (T15) Spade Drill Insert H Coated

Sinusoidal thinning edge for smooth cutting Positive rake angleFor use in high nickel alloys materials over 280 Brinell Performs best in rigid setups Point Angle  - 132 degree, (Series 5-8 : 144 degree)

4-1/4" Diameter x 7/16" Thick, Series 8, SV-Point Premium Cobalt (M48) Spade Drill Insert H Coated

Sinusoidal thinning edge for smooth cuttingPositive rake angleFor use in high temperature alloys and materials over 350-500 Brinell Performs best in rigid setups Point Angle  - 132 degree, (Series 5-8 : 144 degree)