Review on 🔧 Professional Rivet Nut Setter Kit - 16" Hand Rivet Nut Tool with 15 Metric & Inch Mandrels, 150 Rivet Nuts, and Sturdy Plastic Case by Terrance Singletary

Great tool but you can't limit the force applied to different sizes so you have to feel and be careful. Unfortunately, you don't know what a threshold is until you break something. I messed up a 4mm mandrel within the first few minutes of use by pulling the strings, even with fairly soft stainless steel rivets. Adjust the spike and collar to limit the range of motion for the smaller sizes as much as possible, and don't be a gorilla!