Recently started working with copper for jewelry and wanted a Tumbler. It’s easy to use, but the inner lid is very difficult to put in evenly so the top part will screw in evenly and be secure. It actually started to leak and I had to take it out and try it again. You definitely need abut the inner lid is very difficult to put in evenly so they top part will screw in evenly and be secure. It actually started to leak and I had to take it out and try it again. You definitely need a butter knife to pry out the inner lid. I have no idea how this compares to other brands but it seems to do what it’s supposed to.