The MEINL Byzance Vintage Smack Stack add-on pack is comprised of two B20 bronze discs that you can use to expand your Smack Stack. This pack features both an 8” disc for added high end and a 16" disc for a lower timbre. Add to your existing Smack Stack and use all five discs for more volume and a fuller sound. You can also mix and match discs to find the sound that suits you best.