Every travel trailer has a mechanism for leveling the RV and getting it on and off a hitch ball. That mechanism is your RV tongue jack. The best trailer jack makes it easy to connect and disconnect from your tow vehicle and achieve the perfect level at any campsite.
This is a companion discussion topic for the original entry at https://blog.campingworld.com/learn-to-rv/if-you-need-a-new-trailer-jack-heres-how-to-pick-the-best-one/