The quality is really good on them. Sturdy as heck! The 1020 trays I got a while back from a local hydroponics store and they are no where near the same quality.

https://www.amazon.com/1010-Seed-Tray-Microgreens-Wheatgrass/dp/B074LSRL31/ref=mp_s_a_1_1?keywords=1010%2Btray%2Bbootstrap&qid=1563076109&s=gateway&sprefix=1010%2Btr&sr=8-1&th=1&psc=1