These are the best TX60 covers on the market.
Snug fit with super thick walls so they will not loosen over time, protecting the ends of your batteries from short circuit, and dirt and dirt that can effect the connection. Printed in flexible material
Fingers at insert into the connecot that secures the cover totally the the connectors with no chance of coming lose.
Text marked FULL . So you know your batteries are done.
These are not the thin walled protectors, these are hands down the best one we have seen.
A protector from shorting is required by the FAA if you are going to fly with your quad and batteries. These protectors fit that requirement and they will not fall off by accident.