WETOLS Rivet Nut Tool Kit (14-Inch) with 7 Metric & SAE Mandrels, 70-Piece Rivnut Assortment
Product description
Quick overview
If you’ve ever wanted a cleaner way to add strong, threaded mounting points to sheet metal or similar materials, a rivet nut tool kit is the practical route. The WETOLS Rivet Nut Tool Kit is built around a manual rivnut gun with interchangeable mandrels, plus a 70-piece assortment of rivet nuts and a rugged case for storage.
On paper, it’s aimed at hands-on DIYers and small-shop users who want a do-it-right setup: multiple sizes, swap the mandrel as needed, and keep everything organized in a molded carry case. It’s not pretending to be a power/production solution—this is very much a manual, hands-first tool.
Key takeaways

What stands out here is the range you get without having to buy separate tools for every size. You get 7 interchangeable mandrels, covering metric and SAE options, and a mixed assortment of rivet nuts sized to match those mandrels. The kit also emphasizes ease of mandrel change “by hand,” so maintenance and quick size changes don’t turn into a whole afternoon project.
One small limitation to keep in mind: the description notes that the 1/4-20 mandrel was installed in the rivet gun. That’s normal for shipping, but it’s worth checking right away when you unbox so you’re not surprised by what’s already mounted.
What you’ll notice day to day
The tool is designed for straightforward operation and real-world handling. The mandrels are described as made from chrome steel (heat treated), while the arm is made from 45 carbon steel, with corrosion resistance and resistance to deformation called out in the listing. In practical terms, that suggests the kit is meant to stand up to repeated use rather than being a one-project-only purchase.



For the kit’s storage and access, everything goes into a blow-molded carry case. Each tool/accessory is placed close to its location to prevent movement and scratching—an underrated detail if you’ve ever opened a messy parts bag and found metal bits bouncing around.
Quick usage example: say you’re mounting hardware on a piece of metal and your plan calls for a specific thread size. You’d choose the appropriate mandrel for that size, swap it by hand, install the rivnut using the manual gun, and then use the threaded rivnut as your solid attachment point. The “swap mandrel quickly” approach matters most when you’re switching between sizes mid-project.
Tech specs
- Name: WETOLS Rivet Nut Tool Kit
- Type: Manual rivet nut (rivet nut gun / nutsert) tool kit
- Length: 14-inch
- Mandrels included: 7 interchangeable mandrels
- Metric mandrel sizes: M6, M8, M10
- SAE mandrel sizes: 1/4-20, 5/16-18, 3/8-16
- Rivet nuts included: 70pcs assortment kit
- Assortment detail: 20 rivet nuts for SAE 1/4-20, 10 rivet nuts each for the other 5 mandrels
- Case: Rugged BMC blow molded carry case
- Materials (as described): Mandrels from chrome steel (heat treated), arm from 45 carbon steel

Where it shines (and where it may not)
This kit makes sense if you want one manual system that covers multiple common metric and SAE thread sizes, plus the rivet nuts to match. It’s especially useful for metalwork where you’d rather avoid drilling and tapping threads by hand, and instead install a rivnut to create a threaded anchor.
It may not suit you if you’re looking for high-volume production speed or power-assisted operation. Manual rivet nut tools can be totally workable, but they’re not the same category as automated or production-oriented setups. Also, if your projects consistently use only one thread size, you may find that the multi-size bundle is more than you need.
Compatibility & requirements



Before buying, double-check that the sizes you plan to use are covered in the mandrels and rivet nut assortment listed here (M6/M8/M10 plus 1/4-20, 5/16-18, 3/8-16). Since the kit’s purpose is matching mandrels to rivet nut threads, choosing the right size set for your hardware is the simplest way to avoid frustration.
Also take a quick look at the condition and contents when it arrives—particularly because the listing specifically mentions that the 1/4-20 mandrel was installed in the rivet gun.
Should you buy it?
Buy the WETOLS Rivet Nut Tool Kit if you want a manual rivnut setup that covers multiple metric and SAE thread sizes with a matching 70-piece rivet nut assortment, organized in a carry case that’s built to travel and sit on a workbench without turning into a parts mess.

Skip it if you only need one mandrel size, or if you’re expecting a production-style workflow rather than a hands-operated tool. The kit is a solid “work-ready” bundle for the kinds of projects where rivet nuts solve the need for sturdy threaded mounting points—but it won’t magically replace the speed of powered or specialized tooling.
Mini FAQ
What mandrel sizes are included?
The kit includes 7 interchangeable mandrels: metric M6, M8, M10 and SAE 1/4-20, 5/16-18, 3/8-16.



How many rivet nuts come with the kit?
The assortment totals 70 rivet nuts: 20 for SAE 1/4-20, plus 10 each for the other 5 mandrels.
Is the mandrel easy to change?
The listing says the mandrel can be removed by hand for easy change or maintenance.
Does it come with a storage case?
Yes. Accessories are packaged in a blow molded carry case.
Is this tool meant for heavy production work?
Based on its manual design, it’s better viewed as a hands-on tool kit than a production machine for high-throughput setups.
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