Review on 45 Speed Steel Gauge for Gyros 22010 by Justin Miller

I bought these to replace the bits that came with the inexpensive vise that I used primarily for drilling out cannon barrels on Warhammer 40k miniatures. These bits had a hard time drilling through plastic and I ruined a few barrels as a result. These are way, way better. They bite the plastic easily and stay inside. I can let the vise do most of the work. It is also easier to center the drill in the barrel. Highly recommended.