- Material: HSS (5% cobalt)
Shank Diameter: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm
Easy to process;
- Premium Quality 5% Cobalt High Speed Steel M35 provides all drills long tool life;
- Precision fully ground ensures chips moving smoothly, ultimate accuracy and performace;
- Golden surface finish resists corrosion and increases the hardness of the drill bits;
- 135-degree split point prevents "Walking", reduce logging, and penetrates hard material without a pilot hole.