Dormer A777 HSS-E Cobalt Jobber Drill Bits 0.4mm Pack of 10

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 numbers: A777.4|A7774

• For use on machines or hand held applications
• Bronze finish identifies Cobalt based substrate and reduces built-up-edge
• Heavy Duty design provided increase strength for drilling difficult materials
• 135 degree split point provides self centering, low thrust and easier penetration
• High Speed Cobalt (HSCo) provides superior hot hardness when drilling