Griego DECO 0.25 Silver-plated SP Large Bore Bass Trombone Mouthpiece ★ Rim Diameter: 29.39mm ★ Throat: 8.08mm * With the new engraving, the characters are wider than the old specifications. ★ After purchasing this used item, I tried it out a few times. * Released by a professional musician * There is a slight area on the shank where the plating appears to be peeling, but it does not affect playing. 【 DECO Model 】 Griego's unique heavy type. It has weight, and you can get a focused sound with a core. 0.25 is the largest size, and it has stability and capacity that won't break down even at high volumes. Ideal for bass trombone players who want a large capacity & heavy setting.