I have tried Roland Scandinavia, they didn�t have them. But you can try in Germany I suppose. I made new to myself by using �sleeping-rubber� (the thing you sleeps on in tents) and cutting with a sharp knife. Maybe not beautiful� but just as good as the originals.
The inlays are placed in the bottom of the pedalboards to secure the pedals. Made of foam rubber with cutouts for the pedals (even for twin pedals if you like).