Rivet Nut Tool 3 in 1, Prostormer Rivet Gun Reamer Set, Professional Rivet Nut Setter Kit with 6 Metric/SAE Mandrels and 2 Reaming Mandrels, Rugged Carrying Case for Automotive, Furniture

As far as I can determine there are six of these curved handle 3in1 rivet set tools sold on Amazon. They range in price from $38 to $57. As far as I can tell from the enlarged photographs, the biggest difference is that some vendors used a professional photographer and some used an amateur photographer. They even use the same molds for the 'soft rubber handles'. They all also fail to properly translate the word "nibbler" (for some unknown reason they use the word "reamer"). The handles are 7-1/2 long from the pivot screws to the ends. The spring loaded handles open and close in a symmetric manner.I purchased this to use with the longer (stronger/higher quality) 'PlusNuts' inserts. The 'Proper' tool to use for 'PlusNuts' is the Astro Pneumatic 1450 that is equipped with longer mandrels for those inserts. However it costs nearly three times as much and can only be used as a rivet nut setter. To be fair, it also comes with a wider range of mandrels including larger sizes.The 1/4-20 mandrel on this tool only extends a maximum of 5/8 of and inch. One inch is needed for the PlusNuts. The trick to using the PROSTORMER tool with 'PlusNuts' is to replace the screw with a longer screw and a flat washer. I was able to order six 1/4-20x5 inch long grade 8 Hex head cap screws for $11. I used JB weld to add a short piece (two inches) of 3/8 OD by 1/4 ID tube to the top section of the bolt just to center it in PROSTORMER tool.One star deducted because of the overly short mandrel screws.

I was looking for a rivet gun, then leaned that my needs expanded to the rivnuts. So, I like that this does both, plus reaming. I tried using just bolt and coupling nut solutions and found they just ended locking up. The only negative feedback is smaller rivits stems get stuck in the jaws, which requires a disassembly to extract.

Handy for medium sizes. I needed the 5/16 which is hard to find. Short handles can make it tough to use but hard to overpower it. Good for compact locations.

fantastic tool. It was able to work on 1/4" stainless steel rivets which other similar sized tools struggled with.

Multi tool as advertised, came with starter hardware to use but need to order extra fasteners with if you are doing a project.