This product works great. Good price for a pair. Another kit I tried didn't reach far enough to attach my tandem wheels to my 31ft RV/RV. This set goes pretty far. I like the locking mechanism. When I install my camper I use padlocks to provide another step in protecting my camper AND the pads. I bought these because my kids run and play in the RV like they are at home. It really helped with the swaying and swaying. I upgraded the locks because the lock that came with the pads was too weak for my enjoyment. Please note that you will need to be selective about the size of the upgraded locks as some sizes will not fit through the lock hole.