These are great caddies for my outdoor plants, heavy duty and UV resistant plastic with nylon and steel wheels. I purchased 12 and put them to use right away. They appeared to be long lasting, claimed to support up to 500 lbs and move with ease.

I ordered 5 from Wayfair's 'returned products' and they are good as new and I saved $$. Plus I get 10% off from re-ordering.