Slide-O-Mix Trombone Cleaning System ACAUDIT 459" bore with a responsive

459" bore with a responsive 4-13/16" bell spun on a professional Bach mandrel and is finished with a brass bead wire placed in the end of the bell

Reserve Evolution mouthpieces deliver a warm and refined tone featuring quick response and ease of articulation

Protects your mouthpiece and reed from damage inside and outside the case

Same design as the original Micro

Extended nozzle tip for getting into tight corners

Slide-O-Mix Trombone Cleaning System ACAUDIT 459" bore with a responsiveThe Slide O Mix 337B Trombone Cleaning System (designed for small to medium bore trombones, up to ~13. 34 mm) is a compact, travel friendly toolkit that simplifies both dry and wet cleanings