Grassi STB850 B Tenor Trombone – School Series

The Grassi STB850 is a student-model B♭ tenor trombone from the School Series by Ida Maria Grassi, developed under the Proel brand. Designed specifically for beginners and school use, it offers a smooth and consistent slide, lightweight construction, and reliable tuning—making it ideal for first-time players and music programs. Built from lacquered yellow brass and equipped with a nickel inner slide, the STB850 offers durability and resistance to wear, ensuring stable long-term performance. Its compact foam-padded case doubles as a backpack, providing convenient portability for students on the go. Key Features Pitch: B♭ tenor trombone Bell Diameter: 204 mm (approx. 8") Bore Size: 12.7 mm (0.5"), optimized for student embouchure and airflow Material: Lacquered yellow brass body with nickel-plated inner slide Outer Slide: Lacquered for consistent movement and ease of maintenance Case: Lightweight, foam-lined case with backpack straps included Extras: Includes mouthpiece and cleaning cloth Warranty: Eligible for 4-year educational warranty upon registration Perfect for Young Musicians and School Programs With its ergonomic build, smooth slide response, and included accessories, the Grassi STB850 is tailored for early learners and music educators alike. Whether used in class or practice, this dependable trombone offers the tone quality and simplicity students need to build strong musical foundations