PST X Swiss Medium Crash Cymbal 18 Inch. The core of the PSTX is made up of the Swiss models, cymbals that achieve a noisy, dirty, trashy sound quality by the use of specific layouts and varied sizes for the holes. Their silky surface distinguishes the cymbals visually. The PST X Swiss Medium Crash delivers an energetic, aggressive and trashy attack. This is a good cymbal for crash riding at higher volumes.