The Qiilu stopper is a great tool in my automotive garage. Based on my observations, this support does an excellent job of keeping my RV in place, especially on inclines .The anti-slip feature ensures stability and it can withstand a lot of weight, making it useful for vehicles of different sizes. However, the stops are not high enough, and it can be challenging to find the right and left components. Overall, an excellent product for any automotive enthusiast..See full review