Im a diesel mechanic bought it for work to save my back. If you know how much brake drums weigh you get an idea of how sturdy this cart is. If I could give it more stars I would. For the price it’s sold for I was not expecting it to hold up at all compared to 100+ dollar carts. I put a drum on the top part and another on the bottom, the casters didn’t even break a sweat. The only flaws I can think of are the instructions to build the cart were written by a caveman and the cup holder doesn’t fit brake cleaners/battery cleaner/protector/ or any of those cans that I use daily. I guess it’s for actual drinks. Other than that, cart is great