Features: The nozzle diameter is 16.7mm/0.66inch, suitable for soprano straight saxophone, and can be adjusted according to your own needs. The main body is made of brass, carefully selected materials, manually polished, and the surfaces is nickel plated to prevent rusting. Natural cork, waterproof and moisture-proof, soundproof and heat-insulating, washable and not easily deformed. Suitable for music teachers, professionals, saxophone practice, performances, and studio recording. The package includes curved neck and straight neck. Specifications: Material: Copper+Cork Color: Silver/Gold Nozzle Diameter: 1.67cm/0.66inch Package Includes: 2pcs Saxophone Neck note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.