AIRCRAFT EXTENSION: 7/64-inch cutting diameter, 1-1/2-inch flute length, 6-inch overall length, 118 degree point, straight shank MADE FROM PREMIUM M2 HIGH-SPEED STEEL: perform better because of its well-balanced toughness BLACK OXIDE: Black oxide coating resists corrosion APPLICATION: are ideal for extra reach and deep drilling applications in medium and softer materials, soft metal, PVC and wood INCLUDE: 6 pieces of 7/64-inch aircraft extension drill bits with case DrillHulk 6-inch aircraft extension drill bits are made from premium M2 high-speed steel and are with black oxide coating. 6-inch aircraft extension drill bits are designed for extra reach and deep drilling applications in medium and softer materials, such as: metal, PVC, wood. Made in China You Will Get: 6 pieces of 7/64-inch. x 6-inch. aircraft extension drill bits with case Notice: For high-speed drilling through metal, lubricate the bit with lightweight oil. Warning: Drill bits can shatter during use. Always wear safety goggles and safety items when drilling.