Never used that type of sust before. But, the amps are different sizes, the painted lines appear to be different on each amp, and the lote and date are not stamped on. Those are all signs of fakes. But, I cannot say 100% those are fake.
i guess the angle of the picture makes the amps seem like varying sizes as well as the rings being different but all the amps are uniform in height/size and rings are the same throughout.
If yours look like the ones on top then they are fake. Look at the labels, they are a dead giveaway. It should look like the amps pictured with the box next to it.