The Microfiber Mouthpiece Swab thoroughly cleans the inside of your trombone or euphonium mouthpiece with its ultra-absorbent fibers. You'll appreciate how effectively it removes built-up residue and germs from the narrow curves and contours of your mouthpiece. The durable yet gentle microfiber material is safe for use on any mouthpiece finish and won't scratch the surface. When your mouthpiece needs a deep clean in between gigs or practices, this swab gets the job done quickly so you can get back to playing. For the hygiene and performance of your instrument, add this essential accessory to your cleaning kit.