Bosch BL2647 5/16″ Black Oxide Sp 6″ Long (Carded)

Engineered for exceptional performance, this 5/16-inch x 6-inch extended length drill bit from Bosch features a robust black oxide surface coating, allowing it to outperform high-speed steel by lasting up to 50% longer. Its innovative speed helix design facilitates three times faster drilling in a wide range of materials including steel, aluminum, various woods, and plastics, making it a versatile tool for both professionals and DIY enthusiasts. With a flute length of 4 inches and a suitable shank diameter of 0.3125 inches, this aircraft-length drill bit provides easier drilling with reduced heat, thereby extending its lifespan. Ideal for precision work, this bit is compatible with a minimum chuck size of 3/8 inches, ensuring a reliable fit for your drilling needs.