Review on Homeon Wheels RV Leveling Blocks - Camper Leveler Kit with Curved Levelers, Chocks, Grip Mats, Level, and Bag - Supports up to 30,000 LBS - 2-Pack Black by Mike Weaver

I LOVE these aligners. They are better and cheaper than the brand competitor (red) and perfect for my 25ft camper that has less tire clearance. I've tried the green stamp (which attaches to the boards) and the red stamp (which are very similar to these) and they are by far the best. The green branding was a problem because you have to store some big boards somewhere. The red brand was worse because it had to be cut to fit between the tires and they had a smooth surface. This brand is made with ribbed surfaces so they don't slide on top of each other when placing wedges under the leveler. With any other brand, my camper would eventually slide to the ground and actually bend my camper's stabilizer bars. In addition, they come with rubber grip mats to ensure non-slip and good storage box. The only flaw I could find with them is that the straps used to hold the rolled up rubber mats have velcro that is too small so you have to roll it up to a specific size for the velcro to fit. However, other than that very minor issue, this is a great buy.