Dormer A777 HSCo Heavy-Duty Jobber Drill 10.50mm OL:133mm WL:87mm | A77710.5

Dormer A77710.5 HSCo Heavy-Duty Jobber Drill Bit (10.50mm, 133mm OL, 87mm WL)

Dormer A77710.5 is a heavy-duty jobber drill bit designed for accurate drilling in higher-strength materials, with a 10.50mm cutting diameter and jobber-length proportions for everyday workshop and site use.

Using a cobalt alloy high-speed steel (HSCo / HSS-E) construction and a 135° split-point tip, this Dormer A777 HSCo drill bit helps start cleanly and drill consistent holes with reduced wandering compared with standard point geometries.

Key Features

• HSCo / HSS-E cobalt steel: Built for demanding drilling where higher heat can be generated, supporting longer-lasting performance in tougher materials.
• Heavy-duty jobber length: A versatile general-purpose length for workshop, fabrication and maintenance tasks.
• 135° split point: Helps self-centre for quicker, more accurate starts with reduced walking on the workpiece.
• DIN 338 form: Jobber drill proportions for reliable, repeatable drilling dimensions.
• Straight shank: Common shank style for secure clamping in suitable drill chucks.
• Spiral flutes: Designed to support chip evacuation during drilling.

Specifications at a glance

Suitable applications

• Drilling accurate holes in higher-tensile and tougher materials where more heat can be generated during cutting.
• Workshop, fabrication and maintenance drilling where a heavy-duty jobber-length drill is preferred.
• Use in compatible drill chucks that accept straight-shank jobber drill bits.