Orchestral & Wind Instruments
Startone PTB-20 Bb/F- Trombone Black
Startone PTB-20 Bb/F- Trombone Black, Bb/F Quart trombone, Material: ABS plastic, Bore diameter: 13.90 mm, Diameter of bell: 219 mm, Weight: 860 g, Colour: Black, Includes ABS mouthpiece and soft-bag@+@+*Note:* Mouthpiece colour may vary
https://www.bizrate.co.uk/orchestralinstruments/startone-ptb-20-bb-f-trombone-black-oid9790453253.html