The Evans EQ Single Pedal Patch is a small, yet necessary component to allow your bass drum to perform at its best. These black patches are constructed from extremely strong Cordura material and add to the overall attack and durability of your bass drum heads. State of the art high temperature adhesive keeps the Evans EQ Patch securely in place, even after constant playing. Available for single or double pedals. The actual size of this patch is 2-1/8" in diameter. Evans manufactures the EQPB1 right here in the USA.