BangQiao60 Pack Small 3.90 Inch Clear Plastic Square Nursery and Seedling Pot Container, Seed Starting Transplant Planter with Drain Hole for Germination

These pots will last for years. Great drainage holes and a good size to transplant seedlings into. The only issue is they are a little big to fit comfortably in a 1020 tray. You can squeeze 4 wide, but only 7 length wise.

Good clear pots.

You won't find a sturdier or more well made nursery product than BangQiao. That said, they are pricey.