....come verious lengths and
prices....I've acquired them over time, and as you can see, they are of
different types, some just bent from handy wire, others plant hangers
and some designed and sold specifically for pot rack hangers.
Google "pot rack hooks". The ideal shape is
like this, not
like this.
You want a full curve that comes back up, like the hook on the left
hand of the right-hand picture above...that sort of hook can take more
than one pot. When you're jostling pots on and off hooks, pots
can ride up and fall off a hook that points forward
like this.
You can get more pots on the rack and have an easier time with them if
at least some of the hooks are of different length.
Plant
hanging hooks are good for this, as they come in different lengths
at you local garden supply or elsewhere.