Yamaha 20ml Medium Synthetic Key Oil sax The Glaesel sliding bass mute

The Glaesel sliding bass mute helps make your bass quieter for practicing

but the interactive practice aids that help them excel in the 21st century

The 4-leg base provides maximum stability for the instrument

The innovative design incorporates neoprene with a comfort-stretch backing

Willie Berg invented Stonelined Mutes in 1935

Yamaha 20ml Medium Synthetic Key Oil sax The Glaesel sliding bass muteYamaha synthetic key oil is a special proprietary blend designed for use on woodwind key rods and pivot points, with a corrosion inhibitor that gives added protection to the metal over time. This medium viscosity is an all purpose blend that's suitable for general use.