The 3-piece HCS 10/12/14 Smack Stack features three discs shaped to create a distinctive sound effect. The stack can be manipulated by adjusting the tension of the cymbal stand’s wing nut. 
Increased tension produces a crisp attack and short decay ideal for quick accents, while loose settings yield a longer sustain.  Works well when paired with a snare drum for enhanced back beats, or as an alternative to your snare altogether.