I always find it interesting that wood products are “rounded up” in the measurements, but metal bars are exactly sized. If you buy some steel or aluminum in 2” x 4”, that’s what you get.
Ha....good luck buying Re-Bar from the Chinese...
They have factories as follows.....
Truck rolls up at the entrance with 20 rolls of 7mm Re-Bar...
Comes back a few days later and loads up with 22 rolls of 7mm Re-Bar.