Wow - I just pulled the same kind of staple out of my road bike tire yesterday. I noticed after I had the bike on the car that the brand new rear tire was totally flat. We were in a huge hurry, so I had to wait until we got where we were going to change it. When I finally looked at it, this pretzel-shaped staple was sticking out. As a road tire with 100lbs of pressure and no tread, it did go through the tube. What I don't understand is how I never knew I ran over this thing until the next time I got the bike out.