Yamaha Clarinet/Alto Sax Mouthpiece Cushions …

Yamaha Clarinet/Alto Sax Mouthpiece Cushions  ...Yamaha – Yamaha Clarinet/Alto Sax Mouthpiece Cushions Medium Thin
Black, self-adhesive mouthpiece patches. Four patches per card. Medium, 0.3 mm thick.
Yamaha, Woodwind Mouthpiece Accessories YAC 1093P