Review on 🚧 Zone Tech Trailer Jack Wheel Dock - Premium Quality Heavy Duty Highly Visible Yellow Travel Doughnut Chock: Prevent Wheel Movement & Mud Sinking by Brandon Vox

I already had similar goods. This one seems to be made out of thicker plastic than my previous ones. I love it. Works the way I need it. The only downside is that the pre-drilled holes are the same diameter throughout. So you only need washers on top. This also means you have the bolt/screw head and washer visible. I'm sure in the future they will find a way to shape them with some sort of collar in the pre-drilled holes. There are several supports in this design. I simply screwed 3 screws into a piece of wood that I used as a base. The screws are even and don't stick to anything. They are only there to prevent him from moving in any way. My application needed more height for the boat to drain properly. I would definitely recommend them to anyone looking.