1-1/16" Diameter x 3/16" Thick, Series 2, HSS (M4) Spade Drill Insert TiAlN 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)

2-1/2" Diameter x 7/16" Thick, 4 Series, SM-Point Super Cobalt (T15) Spade Drill Insert TiAlN Coated

Hybrid Point - combines standard point with web thinning for improved performanceReduced thrust, improved centering and stability, increased speed and feedsFor general use in carbon steel, steel alloys, stainless steel, cast iron, aluminum and...