Yeah this one's a bit confusing because squeezing sounds right for a rivet. The thing with Avdel rivets is they're a blind type - when you pull the mandrel through, it actually broaches the bore of the rivet shank to expand it, rather than squashing the whole rivet between dies like a solid rivet. So broaching is the proper term here because the mandrel is cutting and forming the inside of the shank as it's drawn through. Squeezing would only fit a solid rivet you can get to both sides of.