Review on 🎯 Ultimate Precision with Hymnorq Titanium Plastic Aluminum: Unbeatable Quality for All Your Needs by Michael Vargas

5 stars for their value not because they are great quality drill bits. However, these are all serviceable bits and they will definitely cut wood, which is what I usually use these sizes for. The size of screws you're likely to use to attach something to a wall or fence around your house have a root diameter in that range, and pre-drilling one of these screws is the most common reason I go for something like this decide It seems that luck at drilling metal with them increases with size. I have attached three pictures of the working end in different sizes. These all have about the same magnification. The smallest drill bit size in the set (3/64 inch) is the smallest in his picture. As you can see the edge (left) is quite rough. I expect this will drill well through wood and will work well in aluminum as well. for a while and will struggle with the steel which is likely to break soon. In the middle is the second largest. These and all the smaller ones have a 118° point grind as you would expect from the smaller sizes. The 1/8" (largest in the picture) has a 135° grind, which is a nice bonus. In general, the grind quality improves with size. Maybe it's because they use the same grit for all sizes , II I don't know for sure. But the two large sizes seem to have a hard grind that will last a while. The 1/8" grind isn't very precise, so it'll probably cost a few thousand over the Drill size or so, but it doesn't drill for precision work. These drills do not have a size mark on the shank. You need to measure them with calipers or something to identify them, or just keep them in the marked slot in the index. In terms of cost, the professional versions of these bits cost me around $40 from my industrial suppliers. I think you have to be wondering if you really need all of those sizes, for example I never use 3/64", but for a little over $10 ditch if you tend to break smaller parts this is probably one good solution for you.