Drill Bit for set of 5 (A)

Drill Bit for set of 5 (A)

The best drill blades especially for modeling and focusing on the function to use with a pin vise.
The best length for use with a pin vise.
Smooth cutting obtuse angle edge.
Obtuse angle Drill Bit drills smoothly, not shaky, and easy to drill almost perfect circle.
Drill Bit set of 5: 0.5, 0.6, 0.7, 0.8, 0.9mm diameter.