Milwaukee RED HELIX™ 5/16" 3-Flat Shank Cobalt Drill Bit is engineered for exceptional durability and extended life. Its ENHANCED TAPERED WEB™ design strengthens the core, enhancing flute durability for tough drilling tasks. The VARIABLE HELIX™ design features an aggressive 35° helix angle that tapers to 15°, allowing for fast material extraction and efficient cutting. Equipped with a 135° SPLIT POINT TIP™, this drill bit ensures precise starting and reduces walking for accurate drilling. The 3-Flat Secure-Grip™ shank keeps the bit firmly fixed in the chuck, while the QUADEDGE TIP™ minimizes heat build-up, increasing overall performance and longevity. Model Number: 48-89-2317