TeslaTapMini - Tesla to J-1772 Adapter - 60 AMP - Made in USA

Is this UL certified?

Can you leave this adapter on your tesla wall charger long term? or do you have to take it off after each use? i'd like to just leave it on.

Will this work on EV's with a max charge rate of 40 amps?

How big is the hole (J1772) side for lock in mm?