A remarkably versatile stopping mute that plays well in tune with a great sound, the Tri-Stop comes with three interchangeable bell flares, each uniquely sized to accommodate repertoire, register, and volume needs.TrumCor mutes are carefully handcrafted with wood and a specially formulated resonant fiber material. They create a muted tone that is vibrant, warm and responsive. These mutes are durable, and the wide selection of sizes ensures a proper fit and excellent intonation. TrumCor mutes produce a beautiful sound, and at the same time preserve the unique timbre of the horn in all registers and at all dynamics.