Heatbed electrical connector cover

A heatbed is a great addition to any 3dprinter. And so is Auto-levelling. With Autolevelling, I needed to use a metal, currently, aluminium, print bed. I was fearful of the electrical contacts on the heatbed being shorted by this metal printbed. Previously I had them taped over, but here is a more solid protection.
I feel much safer with these on.
Isn't it a pity we can not label our pictures on Thingiverse?
There is probably scope for improvement. Let me know if you think of anything.