Review on 🔪 Cutting Edge Stainless Aluminum: Unstoppable High Speed and Durability by Michael Tegan

These hole saw drill bits look decent. I can use them in wood or metal, but my original goal was to make holes in hydroponic PVC tubing. It will still work, it will still drill holes in PVC, but often you'll have to run the hole saw backwards to make a cleaner hole. You can't run them backwards because the hole saw will thread onto the shaft. Running it backwards simply unscrews it. The set screw is only used to hold the drill in place, not the hole saw. Apart from that they look good.