Lead-free soldering and a more concentrated airflow in the tubes help achieve precise intonation. Technicians perform light tests and professionals conduct performance tests to ensure consistent quality. The 17-key clarinet features two-piece tubes for flexible playability and easy production of long tones across multiple scales. Digital mechanical stamping improves pitch stability. The bore-to-mouthpiece joint is finely polished and sealed after assembly to prevent leaks. An outer copper ring stabilizes the vibration of the tone bore as air flows through, while adding a refined appearance. The leather pads provide good elasticity and long life. Key attributes - Function: precise intonation, stable pitch, durable construction - Compatibility: 17-key clarinet design with two-piece tubes for flexible play - Material: lead-free solder, copper ring, leather pads - Performance: enhanced stability, reliable sealing, smooth tone production Use scenarios - Daily practice at home or in school programs - Rehearsals and performances with student bands or ensembles - Recording sessions or live stage performances requiring reliable pitch and durability