Drill Bit for set of 8 (D)

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 8, 2.1/2.2/2.3/2.4/2.6/2.7/2.8/2.9mm diameter