The most popular L-bore Bb/F-rotary Tenor Trombone (open wrap) for beginners. The valve range is less resistant and therefore easy for students to play.

Key: Bb
Bore size: L (0.547"; 13.9 mm)
Bell material: Y (Yellow brass)
Bell size: S (Standard)
Bell thickness: S (0.040"; 1.0mm)
Bell diameter: 8.504"(216.0 mm)
Finish: L (Lacquer)
Leadpipe material: Yellow brass,with 4 types of replaceable bores: #0 #1 #2 #3
Tuning slide material: Inner Yellow brass / Outer Yellow brass
Hand slide material: Inner Nickel silver with hard chromium plating / Outer Yellow brass
Hand slide U bow material: Yellow brass, Rounded
Open wrap F section

Accessories
Backpacker case
CarolBrass® 6 1/2 AL mouthpiece
Polish cloth
Hand slide lube
User booklet
EDR