Review on Neiko 10197A 5 Piece Titanium Drill Set by Zach Peterson

Large head damaged on first use. We had to drill a stainless steel outlet cap. This is thin stainless steel. The big piece damaged 18mm and didn't make it to 20mm. We had to use other bits as a backup to finish. This left us with a corrupted bit. I'm telling you, that's the stuff they use in Beats. I have other similar bits; I have had them for many years. They all would cut thin stainless steel like butter; but they are not metric. Conclusion: Not the best beats I've ever used. No guard.