Looking to buy a nutsert/rivnut tool

[rtz]

I use the Astro 1452 and have set a bunch of 3/8" and 1/2" in sheet metal. Works fine:

https://www.amazon.com/dp/B01JBNANEE/?tag=atomicindus08-20

 

[techieman33]

I use the Astro ADN38 XL. Much easier and more consistent than trying to do it by hand.
https://www.amazon.com/dp/B01JBHWBR2/?tag=atomicindus08-20