Jerry, I think you are confusing Huck bolts with structural blind rivets. The largest Huck bolt or magna grip that can be pulled with air over hydraulic is a 3/8". The Huck 256 which pulls them costs around $3,000 without the pulling tip. The nose piece is around $500. I own two of them. I keep a 3/8 tip in one of them and a 5/8 tip because we do a lot of trailer repairs. The things that resemble pop rivets are usually called blind Huck or Monobolts. They are in places where it is impossible to use a buck rivet or Huck bolt. Truck manufactures use 5/8 and 3/4 inch Huck bolts. The machine to pull them costs them costs around $100,000. I'm not sure just what you would do with am impact wrench to pull either a Huck Bolt or a blind. Huck bolts are cheaper to install at the factory, but they break after a lot of salt exposure. I replace them with grade 8 flange bolts. I think this whole thread is going nowhere and probably should be deleted.