Dormer A777 4.10MM HSCo Heavy Duty Jobber Drill

The Dormer A777 drill bits are designed for both professional and industrial use, offering reliable performance in high-stress environments. The 135 split point design reduces walking and ensures precise drilling, while the HSS-E cobalt construction extends tool life and maintains sharpness longer, even at high temperatures. Constructed from high-speed steel with 8% cobalt, these drill bits offer exceptional hardness, heat resistance, and wear resistance, making them ideal for demanding applications. Fe... - Manufacturers part number: A77741