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Dormer A777 HSS-E Cobalt Jobber Drill Bits 8.6mm Pack of 10

Dormer A777 HSS-E Cobalt Jobber Drill Bits 8.6mm Pack of 10

Product Description

Dormer offers a set of A777 HSS-E cobalt jobber drill bits in 8.6mm size, provided as a pack of ten. The bits are made with a cobalt-based HSCo substrate to enhance hot hardness, enabling stable drilling performance in demanding materials. A 135-degree split point aids self-centering and reduces thrust, helping penetration, while a heavy-duty design increases strength for challenging drilling tasks. The bronze finish differentiates the cobalt substrate and helps mitigate built-up edge. Compatible with both machine-driven setups and handheld drills, this pack is suitable for various DIY and professional applications needing robust metal drilling capabilities.

Product Details
Size8.6mm
Pack10 bits
MaterialHSCo cobalt alloy (HSS-E)
Point135-degree split point
FinishBronze
Details
  • Cobalt-based HSCo substrate provides improved hot hardness
  • 135° split point for self-centering and easier penetration
  • Heavy-duty design for drilling difficult materials
Advantages
  • Enhanced wear resistance in hot drilling conditions
  • Self-centering tip reduces wandering during start
  • Versatile use with machines and handheld drills
Disadvantages
  • No specific material compatibility beyond cobalt alloys is stated
  • Pack size fixed at 10 bits
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