Peg for Ikea shelves

I was moving some old IKEA bookcases around and found myself missing some of the pegs needed to support the shelves. I checked yeggi but it seems there are several versions of those pegs around. In fact, I have two newer BILLYs that have much smaller holes and metal pegs compared to my older ones with plastic studs.

So I just pulled up Fusion and recreated the pegs i have on my shelves instead of trying my luck with existing models.