Well I got a chance to try it on a slow leak from a penny nail that I've carried with me for too long. It took a lot of effort to push it through my Heidenau Scout 60 tires on the Ktm Adventure. After bending the reamer (user error) and messing up the first connector when trying to fit it into the bus, I succeeded. I was surprised that it took 3 plugs to fill a small 16 cent nail hole. Okay, I'll order replacement plugs and a new reamer head. I hope everything goes smoothly next time.