Looking on eBay I have several choices.
I believe the pegs are 5mm and the shelves are 5/8"
This is like what I have for shelf pegs:
eBay link
Would this shelf peg work?
eBay link
Or would these work?
eBay link
Or I can get an assortment that has all of these except the plastic one.
What ones will work? I would really like to get away from plastic and get metal shelf pegs.