Well, I wish I could say that I am so talented that each and every bead I make is exactly the same size.
Unfortunately I cannot claim that fame!
Usually when I have an order for 2 of a particular bead I actually torch about 4 to 6 beads.

And then, after they are annealed and cleaned I pick the 2 that are most closely matched.

In this particular case there were 4 that matched quite well.

Sometimes I am not so lucky and I have to make more to get 2 that really match well.

And that delays filling orders sometimes;

but I'd be late in filling your order than send you beads that don't match.

Are all the beads you show in a set the same size?

No!

A set usually has beads that co-ordinate well in color and not in size. I try to remember to put the size in the description so make sure you check that.