Plug in bicycle chain protector

Some weeks ago our bike was stolen. It was secured to the wall using one of those plug in chains that go into your frame lock. If you look closely you will see that about 1 cm to 1 inch of metal are exposed where the plug goes in (picture number 3). This is where they cut the chain with a battery powered angle grinder. 

I made this small part to hide this exposed area from view (and I have a small hope that the melting plastic might at least slow down the cut a bit though I am sure it will not brake the disk). The model was so simple I did it directly in the slicer.