Exactly as Johnik said a chain link pin remover, I have its twin in my toolbox inherited from my father. I also have a more modern version I got in a bike repair kit from Aldi. The version you have is definitely superior to the more modern version, it's no wonder it was patented. I'd love to know if it worth anything.I picked this up today in a lot of other stuff. Any ideas what it is for/ It has a makers name PENNANT on it and a Pat no. and Reg no. These are 18A726 and 682820..
if u see the fish on the back of a car burn them off fast unless u have all day to waste going slow behind themThere's a lot of born again christian meetings on your calendar