My understanding of front and rear is, “Front and rear.”
This is what the web site advertised…
These are sold as front and rear pairs.
All alloy construction
85cm and 150 cables
Pads: Semi-metallic
Typical Weight 337g,
If this isn’t what you got, you didn’t get what you payed for.
They’re crap anyway, I’d send them back and get some XT.