The 13" Sabian B8X Hi Hats are sized to be a little higher in pitch and lower in volume, giving you a more delicate sound than a standard 14" pair.
Sabian B8X Cymbals superior to B8 cymbals in every way, but they're priced at exactly the same level! For the same amount of money, you get cymbals with more hammering (including on the bell) and an adjusted profile. In non-geek speak, that means more complexity of sound and louder volume.
