They work great though I wish I would have purchased the taller one's, I think they are around 6" tall, as sometimes the 4" ones just aren't enough. My trailer is a lot more stable when I use them and set the chock type blocks with a rubber mallet under the levelers, they seem to help take out the tire wiggle.
2015 Eclipse Iconic Toy Hauler made by Eclipse Manufacturing which is a pile of junk. If you want to know more just ask and I'll tell you about cracked frames, loose tin, walls falling off, bad holding tanks and very poor customer service.