This single adapter is compatible with the models that have a plastic, as well as the models with an aluminium sub-platter.
This single adapter holds the original Thorens mat in place. Next to this, it can be turned around to accommodate different sized records. One side bulges out to account for singles, and the other doesn’t bulge out to accommodate for full-sized 12-inch vinyls.
Warning: This is a 3D printed product (the black product on the pictures)