General description This high-performance Dormer A777 Heavy-Duty Jobber Drill is specifically designed for heavy-duty drilling in tough materials, particularly in aerospace applications where increased heat is generated. It features a 135° split point for precise and efficient drilling, reducing walking and ensuring clean holes. Made from HSCo cobalt steel, this drill bit offers exceptional durability and resistance to high temperatures, complemented by a bronze surface treatment for added protection and longevity. Technical specifications Material: HSCo cobalt steel Surface treatment: Bronze Flute geometry: Standard helix, right-hand spiral, thick web Point angles: 118° for sizes 0.30 mm to 0.95 mm; 135° for sizes 1.00 mm to 1.40 mm; 135° split point for sizes 1.50 mm and above Tip diameter: 6.80 mm Working length: 69 mm Overall length: 109 mm Size tolerance: H8 Compatibility and accessories Compatible with standard drill chucks and drill presses Suitable for drilling tougher