I used this in conjunction with my 1/4 cordless impact wrench and adapted it to a 9/16 head. I also added a washer between the bolt and the union nut. I squirted a little oil on everything and every Rivnut insert. Works great, quick pull off and the install is very tight, I only had to install a few but because I needed more rivets I went to my local independent hardware store only to find they sell an $8 flare nut and a hardened bolt . for $2.50. This setup worked fine for me, but it's overpriced.