A thin weight 13? X-Celerator top over a high-profile, wide-lipped 16? Chinese bottom makes the XSR Fast Stax a cymbal stack that delivers plenty of pop and attack. The Air Wave edge eliminates airlock for increased volume, and the extra-wide lip of the 16? Chinese accommodates the 13? top snugly for clarity and attack. Without airlock, the XSR Fast Stax always retains its sizzle and volume, never getting too tight; however, sizzle and volume are easily controlled by simply tightening down the cymbal felt.