20pcs/pack Waterkey Spit Valve Corks for Trumpet Cornet Parts Accessory Mechanical Power Transmission It is lightweight and easy

It is lightweight and easy to use

Made of plastic steel material

you will get PH values

Easy to blow and cannot be overblown

- 1 super bright 3528 LED lamp

20pcs/pack Waterkey Spit Valve Corks for Trumpet Cornet Parts Accessory Mechanical Power Transmission It is lightweight and easyITEM NAME: 20pcs pack Waterkey Spit Valve Corks for Trumpet Cornet Parts Accessory img *{margin: 0; padding: 0;. Water key cork pads suit for trumpet cornet flugelhorn trombone. Trumpet water key corks. White Spit Valve Cork: Silica gel. Wood Spit Valve Cork: wood. These water key corks are made to fit trumpets, and can be polished to fit other models as well.