This is the Denis Wick mute model no. 5535 designed for use on flugel horn or alto trombone.
Denis Wick Trumpet Practice Mute
Denis Wick 5526 Practice Mute for Bb Cornet or Trumpet, Black Polyester Coated Aluminium
Denis Wick Trombone Practice Mute - 5527
RASTKY Professional Trombone Practice Sourdine Musical Instruments Accessory - Lightweight Aluminum Trombone Practice, Denis Wick Cup
Denis Wick Trumpet/Cornet Practice Mute DW 5526
Denis Wick Soprano Aluminium Practice Mute
