Horn protector. I only tried it on a few times, so it's practically unused. I threw away the packaging, so I don't have it, sorry... ⚠️ I wanted to use it on a Yamaha YHR-87D horn, but it didn't quite fit... Please be careful if you have the same model. ▼ Product Information: French horn protectors not only protect the instrument from hand oil and sweat, but also have a "shi-trap" function that distributes the burden on the little finger over the entire back of the hand, reducing fatigue. Made of genuine leather with a waterproof treatment on the back to prevent sweat from adhering to the instrument. * There are two shapes depending on the shape of the mouthpiece pipe, so please be sure to check before purchasing. [Compatible Models] (as of October 2019) Instruments where the mouthpiece pipe curves from near the little finger hook. Alexander 503, 1103, 200, 403s, 104, 102St, 1104 Yamaha current models in general (including triple horns) * However, YHR869 is A-Type Paxman in general Conn 8D, 9D, 10D, 11D Hans Hoyer 801, 802, G10, RT91 Wenzel Meinl 105 Conforld 23, 28 E. Schmidt in general, High E♭ triple Dürk D1 Lewis & Dürk LD-X5, LD-X6 Stomvi Geyer type Jupiter 1110 Otto Lukas Finke in general