The Buzzkill is Vater's advancement into muffling technology. Unlike muffling-rings which have a tendency to fall off, or internal mufflers which rattle and squeak, the Buzzkill provides easily adjustable and solid muffling. This pack includes a set of 4 muffling gels which stick right to the head. You can also use these on cymbals, or anything else you can imagine. These particular gels are larger than the typical model, providing an extra dry sound. Grab a pair for yourself and see what all of the buzz (or lack there off) is all about.