SOUNDHOLE BLOCK Rubber cover to be fitted into the soundhole of an electro-acoustic guitar. The soundhole block avoids feedback by eliminating foldback and speaker output from being re-amplified from inside the guitar's body. Helps reduce on-stage feedback Fits most standard soundhole sizes (100mmØ) Can be used for quieter rehearsal FittingCircular soundhole 100mmØ Dimensions14 x 110mmØ Weight42g