Reddit reviews iExcell 4.5" Side Cutter Diagonal Wire Cutting Pliers Nippers Repair Tool, Green, Chrome-Vanadium Steel
We found 2 Reddit comments about iExcell 4.5" Side Cutter Diagonal Wire Cutting Pliers Nippers Repair Tool, Green, Chrome-Vanadium Steel. Here are the top ones, ranked by their Reddit score.
Spring Loaded Handles,Convenient to Use;Soft PVC Covering the Steel Handles,Comfortable to Use;For Cutting Ty-Rap,Zip Ties,Thin Wire, Headpins, Eye Pins, Small Chain, Tiger Tail, Cords, Beading,etc;Material: High Quality Chrome-Vanadium SteelGreat repair tools for electricians or jewelers;
Anything small like this will work, of course you'll need a new pin.
https://www.amazon.com/iExcell-Diagonal-Cutting-Nippers-Chrome-Vanadium/dp/B076XYVS6Y/ref=sr_1_27
I'd try to cut the keychain off with a small pair of wire nippers
Good luck