Features: This essential rotary valves serves as component for various brass instruments, including trombones, horns, and flat key euphoniums, ensuring stable center functionality and smooth operations across different devices, making it a must have brass instrument part for musicians. Designed with precisions in left (L) and right (R) versions, each weighing only 5.8 grams for portability, and featuring exact dimensions like 15.7mm and 19mm for the right valves or 11.5mm and 6mm for the left, this valves assurances seamless fitting and enhanced compatibility in instrument assemblies. Ideal for professional musicians, repair technicians, and student players who require dependable replacement parts for maintaining or upgrading their brass instruments, such as trombones and horns, ensuring optimal performances during practice or performances. Perfectly suited for assembly, maintenance, and repair scenarios in brass instrument setups, this valves facilitates effortless rotation of keys and components, enabling smooth playability in rehearsals, concerts, or studio without disruptions. Constructed from alloy, this standalone rotary valves accessory offer longevity and universally adaptability, serving as a key brass instrument valves for routine upkeep and stable functionality in any musical environment. Specifications: Component: Alloy Size: As Pictures Show Package Includes: 1x Rotary valves note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.