godhand drill bit set of (b) gh-db-5b for plastic models godhand the best drill blades specially for modeling and focusing on function to use with pin vise.<br/> the best length for using with pin vise.<br/> smooth cutting obtuse angle edge.<br/> obtuse angle drill bit drills smoothly, not shaky, and easy to drill almost perfect circle.<br/> drill bit set of 5, 1.0, 1.5, 2.0, 2.5, 3.0mm diameter.