Shelf Suppprts cracking up

The glass shelves in my Blomberg BC290B Fridge freezer have a white plastic strip that clips over the glass at each end — this strip then rests on the supports and hold the shelf up.

These plastic strips are cracking and falling apart. Whitegoods can’t supply spares for this machine. But I’d guess many other fridges use a similar arrangement for supporting shelves.

Can anyone suggest alternative spares that would do the job? (eg Hotpint, or a different Blomberg model). The glass shelves are fine, it’s just the plastic strips I need.