The Master Mechanic 25/64" x 5-1/8" Cobalt High-Speed Drill Bit is engineered for precision and durability, making it an essential tool for both professional and DIY enthusiasts. This drill bit features a robust high-speed steel construction with an 8% cobalt content, ensuring exceptional heat resistance and cutting efficiency even at temperatures exceeding 1000° F. The innovative 135 split point design and four cutting edges facilitate quick penetration into hard materials, eliminating the risk of walking during use.