Review on 🔩 Enhanced Cobalt Silver Deming Drill - Superior Performance and Efficiency" by Michael Jennings

I bought these bits because I needed to drill a 1" diameter hole in 1/2" diameter 360 brass. Even with cutting fluid, the chisel was slow to do its job. at least 1/2 hour to go through a hole. The ends are blunt and don't hold their edge. I will say the sides of my holes are very nice and smooth but with so much turning and cutting it should be. I expect better, especially when using a bit that should be high speed steel that cuts through softer material like brass.