I made these after camping at a site that really pushed the limits of the stabilizers and what I carried with me to go under them in the case of a really angled camp site. These are all uniform in shape. The notches across the top and bottom allow the sandpad of the stabilizer to be actively captured so it doesn't shift, as well as provide a little relief on the bottom to help minimize rocking on textured surfaces.

These are now required for stabilizer use, after the axle flip.