Austin Custom Brass 1.25CDS Trumpet Standard
Austin Custom Brass Trumpet Standard 1.25CDS, Trumpet Mouthpiece, Standard series, Comparable to Monette B2LD, Outer diameter: 27.13 mm (1.068""), Inner diameter: 17.04 mm (0.671""), Cup shape: Medium Shallow Bowl, Relative cup depth: 5, Shape of the backbore: S, Silver-plated