"U" x 12" HSS Aircraft Extension Drill Bit 6" Cobalt Aircraft Fractional Drills high-tensile strength materials such as

high-tensile strength materials such as aluminum

Works on many materials

They feature a left-hand helix and are made of high-speed steel with a 118° conventional point

It has a 135° split point tip for fast and accurate drilling and is manufactured to Aerospace Standard 907 for superior quality

Their high red hardness allows for speeds up to 30% greater than conventional M2 high-speed steel and the 135° split point tip ensures fast and precise drilling

"U" x 12" HSS Aircraft Extension Drill Bit 6" Cobalt Aircraft Fractional Drills high-tensile strength materials such asDescription A versatile drill for production, maintenance, or portable drilling jobs. Ideal for extended reach. 135 split point tip for fast, accurate drilling. Works on many materials. Black oxide surface resists abrasion and improves chip flow. The round shank fits various tool holding systems. Sold in packs of 6