FX Stacks are inherently bright, musical and very responsive, but
  the included multi-functional Zildjian Cymbolt® mount lets
  drummers customize the Stack's articulation to their tastes with
  quick and easy tension adjustments. The ability to dial in a
  desired voicing puts a number of sound profiles immediately at a
  player's fingertips, from a bright and splashy wash, to raw,
  quick and cutting. While cymbal stacks are particularly popular
  in contemporary styles including fusion, industrial and hip-hop
  subgenres like trap, the concept of cymbal stacking encourages
  creativity and sound exploration, and can therefore be applied in
  any drum set or percussion situation, especially with the level
  of customization the FX Stacks offer.