This mute can be used as a straight mute on its own, but by attaching two different types of adjustable cups, you can fully enjoy different cup timbres!! Trumcor mutes are carefully handmade one by one. The straight mute alone produces a core sound. Attaching the included normal cup gives a slightly brighter and clearer cup timbre, and replacing it with the bowl-shaped cup will give you a remarkably soft timbre. Also, since the cup part can be adjusted back and forth, you can adjust the timbre and perspective to suit the musical style, regardless of the bell size. ⚠️ Compared to New Stone Lined cup mutes, Trumcor cup mutes produce a louder sound. Those who need a muffled sound may need some getting used to it, but it is highly recommended for those who want to stand out in solos or want more volume. The Trumcor logo and serial number 240 are engraved on the head of the straight mute. The serial number is also written on the outer box. Color: Black It has a matte black finish. - Material: Aluminum - Accessories: Dedicated storage bag I haven't used these much and have kept them stored away. To those who will welcome these, thank you very much.