The Osmun Symphonic Trumpet Visualizers provide a modern answer to the persistent challenge of traditional mouthpiece visualizers, which often come in a smaller diameter. Our Symphonic Visualizer is available in the three most sought-after orchestral sizes (1C, 1.25C, and 1.5C) and comes with the added advantage of interchangeable rims with a single handle. You have the flexibility to utilize the one that matches your current playing size or keep a set of all three in your trumpet studio for instructional purposes. Rims are silver plated.