Description: 【Compatibility】10 pieces trumpets valve piston guides, engineering to fit horns seamlessly, these valve guides for horns are necessary trumpet repairing parts. 【Excellent Material】Crafted from high-grade plastics, these valve guides for brass instrument resist wear and tear, promising longevity and consistent performance. 【Enhanced Playability】By maintaining optimal valve alignment, these guides help to produce a clear, stable tone. Help to improve the accuracy of the keys and improve the fluency of playing. 【Precision Design】Each valve guide is produced with exacting specifications to guarantee a perfect fit and effortless valve alignment, enhancing your instrument's response and air flow. 【Brass Instruments Accessories】These trumpets valve guides replacement are perfect suitable for the daily repair of wind instrument, can be installed quickly. Great trumpet repairing parts, ensuring your alto horn is always in top playing condition. Specification: Material: PP Size Chart: 18*26mm/0.71*1.02inch Package Includes: 10pcs Valve Guides