heh t-nitro,,i had some from him last year and they are some stupid high tensile rivets,,dunno where he got them but i had to find more also,,soo i went to the fastener shop here in town,,dunno if you can find something similar in your area but,,i brought them one,, and the guys there had a good idea of the strength. i got a bag of 100 for like 33$ and they were just as hard to pop as chads,,i use a 24" sissor style rivet gun to pop them,,nothing else in my arsenal would even come close. Since then i've been using blind rivets which requires a dead blow on one side and a tip installed in my air hammer,,,those things are the gear and they look great,,anyhoo hope this helps,,I'm gonna ask chad at the sled show where he gets them thoo