Guy at work uses those, they last less than a year.
The sides are fairly thin so the top doesn’t always fit right, though the top to bottom latches are OK.
Very low ground clearance, wouldn’t do off road and it tends to scrape on the pavement, more clearance if you tilt it more but the handle isn’t long enough.
He probably has 20kg in it. He’s also broken the top handle, wheels fall off etc etc.
There are better versions, but personally I reckon a decent big toolbox mounted to a sack truck with pneumatic tyres would be 10 times better. Or a Bob/Revolution trailer and a bike!