WETOLS 16" Rivet Nut Tool, Professional Rivet Nut Tool Kit with 11 Metric & Inch Mandrels M3 M4 M5 M6 M8 M10 M12, 10-24, 1/4-20, 5/16-18, 3/8-16, 110pcs Rivnuts and Blow Carry Case - WE-889

Great tool that seems to be very good quality for the price. It includes a good selection of both SAE and metric sizes along with the associated rivet nuts, so you have plenty of options for different jobs. After reading the instructions and watching a few videos, it’s pretty easy to use, and you can get a good feel for how much pressure to apply. It works great for installing new rivet nuts or tightening up old ones that have come loose. Overall, it works great and is a really good value compared to other options.

Perfect tool for what I needed. Easy to us and I liked that it came with an assortment of rivnuts. Would definitely recommend the tool.

Very helpful. At first, I was trying to install rivet nuts ("rivnuts") with the "wrenches and two nuts" method, but for M3 bolts, the bolts themselves were twisting and deforming before the rivet nut was buckling into position. So, I broke down and ordered this toolset because it contained a wide selection of mandrels, down to M3. Once it arrived, I was able to install a rivet nut effortlessly, compared to the wrench method. Seriously, this is way, way easier. One caveat: you can easily thread a rivet nut onto the mandrel too far, and this tool will happily pull the mandrel through the rivet nut completely, which risks tearing out or deforming the threads on the rivet nut. Because the tool offers so much leverage it makes the rivet nuts easy to install, but the side effect is that you don't get a lot of feedback on the resistance which would allow you to feel when the rivet nut "lets go" (which is when you would stop compressing and un-thread the mandrel). So, instead, you will need to experiment with how far to thread the rivet nut onto the mandrel before installing, if you're going to compress it all the way. So far, I've had good luck with threading the nut on just until the mandrel's bolt starts to peek out the other side of the nut, but I've only done that for M3 nuts and haven't tried any other sizes, so there could be some variation from size to size.

I originally bought this because I wanted captive fasteners on my trailer fender. I’ve since used it on a handful of other projects. I’ve been very pleased with it! It works really well. The longer handles make it so it’s not very difficult to set the rivet nuts, though care has to be taken to not pull out the threads. I’ve used the M4, M6, 1/4, and 3/8 mandrels and they’ve worked great. There was on mandrel I tried to use, either the M3 or the M5, that did not fit the rivet nuts that came in the kit. Not a big deal, but kind of odd and a little annoying.

Works great, easy to use.