Description This is a set of high-quality trombone drain valves with cork plugs, made of high-quality materials, high-quality, and durable. The trombone watergate key is easy to install, it will not hurt your trombone, and it will not be easily . Features -Color: As shown -Material:Copper nickel, plated cork -Size: 5.90X2.80X1.00cm/2.32X1.10X0.39in -This trombone accessory is made of high-quality materials, strong and durable, and not easily . -Good quality and durable, professional trombone/French horn/large hobbyist accessories tools. -Simple operation, easy to install and replace, it is a perfect substitute for old or broken products. -The water key is used for wind instruments. It is small in size, light in weight, easy to carry, and does not take up too much space for storage. -The versatility and exquisite design make it suitable for most trombones on the market. Package list: 1 x Drain valve