Description Our water gate key has all the advantages of trombone water gate key parts, durable and easy to use. It fits most models of trombone, so you don't have to worry about it. A professional tool for music lovers. Features - Color: Assorted Color - Material: Metal, plastic, wood - Size: About 7.00X2.00X1.00cm/2.75X0.79X0.39in - They are strong enough, not easily deformed or broken, and can serve you for a long time. - Simple operation, easy to install and replace, a perfect substitute for old or broken products. - The water key drain valve is used for wind instruments, professional trombone accessories tools . - Small in size, light in weight, easy to carry out, 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 1 x Cork Plug 1 x Steel Wire Spring 1 x Base 1 x Gasket 1 x Axle