Evans EQPB2 is a black non-slip flexible nylon bass drum patch for double-pedals which increases attach and strengthen the head without affecting sound quality. For over 60 years Evans has been an innovator in drumhead manufacturing and design. As the creator of the first synthetic drumhead and other revolutionary products such as EMAD Hydraulics and the UV1 series Evans drumheads are designed with the intent of solving problems for drummers. Regarded for high quality and consistency all Evans drumheads are and feature Level 360 Technology.