Yes, as @xsynatic showed, that external hole is easy to see and easy to fill – just dip a tiny shred of paper in epoxy and stick it to the back.
The female has holes that are much harder to notice in the first place, and harder to fill since they actually go inside to the contact surface of the electrodes. You do NOT want to get sealer or epoxy inside those little holes, but they do need to be sealed when using the male end for the key.
It’s just a fuckton better to use the female part as the key, and the male part on the vehicle.
I’ve then filled the end with black HMA and sliced off the excess with a razor for a nice clean finish on the end cap. JB weld would probably be even better.
Either one of these works as long as one of them has the xt90s
Bottom one might be cheaper because you can make more keys for less money but depending on how you secure the “non-key” part it’ll be a bitch to get removed IF the Antispark part blows.
@glyphiks designed one like this. I hear he takes payments in gen-z memes, directly to his inbox. He prefers that each meme comes in it’s own separate PM thread.
