I use these everyday when working with a variety of sizes of aluminum, steel, and stainless steel rivets. I've been using an older (US made) version of this tool for a few years now and honestly I can't tell any difference in usage. Of course, any manual rivet gun will require maintenance and adjustment as needed, so there are no surprises here. This is the same old Marson design that has served me well in the past. I expect to use it at work for the rest of my career, even daily use, and am happy with it. If you are familiar with the make, model and design, just buy it and use it. I'm happy with mine, I think you are too. For my needs, the Marson design is much better than the stamped steel versions that other brands seem to prefer.
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