Overall I am very happy with the progress I purchased. The additional support bars for the size plantar that I purchased is supposed to have 4 according to the insert guides. But ultimately due to the configuration I only have 2. I still think that this provides sufficient stability/durability. I looked into buying the additional rods data more support/stability to the units overall as I purchased 3 of them. The price for the rods themselves I think are over priced so I am going with the 2 that it came with and not upping it to 4 per plater. I love the height of the plantars as does my wife. The multiple configurations also is quite nice and allows you to fit the area you desire.