1/8 x 8 Inch Extra Long Drill Bits (3 Pack), Aircraft Drill Bit Black and Gold M2 HSS for Wood, Plastic, Thin Metal Sheet Extra Long Drill Bits: 1/8 inch x 8 inch aircraft drill bits, 3-Piece. Ideal for drilling wood, plastic, PVC, thin metal sheets UP to 3X Longer Life: Made of M2 high speed steel, provide durability and resisting breakage. Black and gold coated for high-heat resistant and rust protection Efficiently and Clean: Fully ground technology for PRECEISION and FAST drilling clean, burr-free holes Prevent Walking: 135 Degrees split point for precision start NO WALKING, and stays sharper longer than your standard drill bits Optimized Flute Design – Faster chip remove. Size markings on the shank for identifying sizes quickly, comes with straight shank