【okura + mute】For French Horn

This is a practice mute for the horn.
I purchased it out of necessity and used it for about a month. After that, the need for it disappeared, and it became unused in my dresser, so I am offering it to someone who can make use of it.

As shown in the second photo, the mute can be separated into upper and lower parts, and the internal attachment seems to allow for adjustment of volume and resistance.

I used it with an Alexander 103.
I do not know about the fitting for other instruments (there seems to be no specific mention on the website).

There is no box, so it will be shipped wrapped in bubble wrap, etc.

Below is from the website:
Features of okura + mute
● Suppresses unwanted vibrations and eliminates unevenness in tone.
● The main body can be opened and closed to keep the inside clean.
● Two types of air hole sizes can be selected. Allows practice utilizing differences in resistance.
Practice mutes often prioritize sound dampening and good blowing feel.
However, the most important thing is the pleasantness of the audible tone.
In 2013, the handmade practice mute  was born, which does not worry about breaking playing technique and has the potential to aid improvement.
It quickly found its way into the hands of players worldwide, and inquiries from around the world continue to this day.
To allow more players to experience it, the new okura+mute has been completed.
okura+mute offers excellent sound dampening and a pleasant feel that makes you want to keep playing.
- Originator: Trumpet player Toshio Okuda