The Evans EQ Patch is a clear non-slip plastic patch for your bass drum heads. Just patch it over the spots where your double-pedals make contact with the head and voila - you now have a head that sounds almost exactly the same (if anything, it may be a lick more articulate) and will last months longer. Protects the bass drum head from pedal fatigue 2 patches per package Increases attack without affecting sustain or low end **DRUM PEDALS , DRUMSET AND DRUM HEADS NOT INCLUDED**