Originally Posted by kksitte
The leveler you referred to is a BAL Light Trailer Tire Leveler
I used to use one of these with my old trailer and they are indeed wonderful. They chock the wheel and level the trailer at the same time. Since they get pretty dirty through use, it is a good idea to put them in a pizza delivery bag for transport. Of course they don't work on my Escape 19 with the tandem axle so I gave mine away to a friend.