Part of the D'Addario family, the global leader in musical instrument accessories, the Evans brand is synonymous with quality and consistency. Decades ago, Evans was the pioneer of drumhead manufacturing and design, and today they are the innovators. Evans Bass Drum patches are applied directly to the bass head and are designed to protect the head from pedal fatigue and prolong its life. The black nylon patch softens attack slightly and strengthens the head without affecting sustain or low-end, and is available in single pedal and double pedal versions.