Ebony Mute Uma (Bridge) for Okinawa Sanshin - A * We offer repairs, maintenance, and karakuri (tuning peg) adjustments for sanshin. Please feel free to contact us. This is an ebony mute uma (bridge). Compared to a standard bamboo uma, the volume is reduced by about 40% (approximately). Ideal for nighttime practice when you can't make loud noises! Length is approximately 150mm, width is approximately 6mm. Each one has slightly different dimensions. Please consider the photos as a reference. Some may have different colors or patterns, but this does not affect the muting effect. The wider the base of the uma that contacts the body, the quieter the sound. Compared to the mute uma B (sold separately), this one is narrower and the sound is louder. * Uma (bridge) only. Sanshin, chigaa (sound box), and teegaa (skin) are not included. ※※※※ ※※※※ ※※※※ ※※※※※ We are also selling other Okinawa sanshin and sanshin-related items. Thank you for your interest.