Trumpet Replacement Repair Parts Approximately 200 water key corks/spit valve corks for trumpets. Brand new, unused. Made with genuine Portuguese cork. Diameter: 9mm, Height: 3.5mm Please send a message before purchasing. Due to significantly reduced stock and the discovery of individuals reselling these at high prices on Amazon, the cork supplier has requested a price revision as they no longer wish to provide them at a low cost. The individual who was the sole manufacturer of cork for musical instruments in Japan has passed away, and these are the last items from O Kogeisha. Musical instrument manufacturers have previously used these items, and this listing is for the same product. High-quality cork from O Kogeisha will no longer be available on the market, so these are the last remaining items. Professional-grade, top-quality product. Commercially available corks are often bleached or have their holes filled with powder, but natural corks have natural blemishes and holes, so please understand. Sales proceeds will be donated to cat protection activities. We will only sell corks to those who are willing to communicate via message. Thank you for your understanding. Instrument adjustment, maintenance, instrument repair shop, wind instrument repair shop, cork replacement, overhaul