A present from my mate -who runs the nearby retro-bike shop&service
OK,it's not an MTB part,but something special:hand-craft converted from a DuraAce crank(make of year B B,it means February 1977)
This tool was proven recently: it works perfectly!
Guess what is it for!

OK,it's not an MTB part,but something special:hand-craft converted from a DuraAce crank(make of year B B,it means February 1977)
This tool was proven recently: it works perfectly!
