FX-crashes, cheese cymbals, o-zone-style cymbals - the terms are many, but what we're talking about is crash cymbals with holes in them.
In this case, it's a 19" cymbal from Anatolian's Ultimate series with 8 large holes.
And what do they do? Well, they deliver this airier and simultaneously trashy sound, which can be just right for the drum kit. Either as a dedicated main crash or as a supplement to the regular crash cymbals.
The combination of effect and regular crash cymbals is also worth mentioning, as here you also get a really cool "combo sound."
This specimen has plenty of volume - you'll hear it!
The cymbal is medium-hard/soft to strike, has a fairly dark and almost gloomy sound, and will certainly provide you with new possibilities in your drum set!