Works great. You can use a drill with it and install and remove them very quickly. Well I have to say I want them to come on wheels with our purchase. What a huge difference they make in preventing the trailer from wobbling when you are parked. I didn't buy them to replace wheel chocks, I bought them to keep the trailer from moving while driving in. I roll over like a fish when I sleep so hopefully they won't let the wearable hood move. We'll find out this weekend. As I said in the beginning, I didn't buy them to stop the trailer from rolling, I got them to stop moving and they helped a lot. I love her!