Package includes: 20 x Suona reeds Key features: Sizes included: 1.70 x 0.90 x 0.50 cm (0.67 x 0.35 x 0.20 in), 1.90 x 1.10 x 0.50 cm (0.75 x 0.43 x 0.20 in), and 1.80 x 1.00 x 0.50 cm (0.71 x 0.39 x 0.20 in). Materials: plastic construction with copper components for improved durability and stable performance. Lightweight and compact design for easy carrying and storage. Odorless, tasteless plastic that resists deformation for extended use. Simple, unobtrusive appearance suited to traditional suona setups. Why you need these reeds: Ready spares for practice and performance to avoid interruptions when a reed wears out. Durable plastic construction reduces the need for frequent replacement compared to fragile natural reeds. Multiple sizes cover common suona mouthpiece openings and player preferences. Performance and maintenance tips: If the reed feels too hard, lightly sand both sides with fine sandpaper to achieve the desired response. If the whistle tone is too wide or diffuse, briefly blanch both sides using hot chopsticks to adjust the opening. Regularly rotate reeds during practice to extend overall service life. Applications and use scenarios: Rehearsal and practice: keep several reeds on hand for daily practice sessions or group rehearsals. Live performance and events: quick replacements during performances to maintain consistent tone and response. Teaching and student use: suitable as spare reeds for students, teachers, or music schools that need reliable, lowmaintenance accessories. Compatibility and function: Specifically designed for use with suona and similar double reed woodwind instruments. Functions as a practical, reed option compatible with a range of mouthpiece sizes listed above. Contents note: Package contains 20 individual suona reeds in the sizes specified.