MAXTOOL 5/32"x12" 4pcs Identical Aircraft Extension Drills HSS M2 Extra Long Deep Twist Drill Bits Straight Shank Fully Ground Black; ACF02B12R10P4

The drill bits are made of premium high speed steel M2, and suit for cutting metal, plastic, wood, etc effectively with impressive cutting performance;All drill dimensional and tolerances conform to ASME/ANSI B94.11M or USCTI - United States Cutting Tool Institute drill standards;Quality high speed steel ensures the bits super hard, sharp and fast execution in any material for clean results with long tool life;Fully ground process ensures excellent chips moving, and 135 degree chisel angle with split point provide ultimate accuracy start for quick penetration without Walking and less Logging;Precision treatment makes drills to be durable and toughness, withstand heavy duty operation, resist corrosion and lubricate drills better for drilling smoothly;