Features: Precisions engineered saxophone key screws ensure optimal pitch alignment for straight neck soprano and curved neck sopranino saxophones, crafted from brass for reliable instrument maintenance. Specially designed brass screws feature high precisions threading for smooth key mechanism adjustments, maintaining authentic tone quality in saxophone repair and maintenance tasks. Ideal for professional saxophonists, repair technicians, and music educators requiring exacting standards for brass instrument accessories and saxophone key adjustments. Perfect for emergency repairs during rehearsals, studio where precise saxophone key screw replacements are critical for performances readiness. Corrosion resistant brass construction withstands repeated adjustments, making these screws essential components in comprehensive saxophone maintenance kits for long term instrument preservation. Specifications: Material: Brass S Size: Approx. 0.77inch(1.95cm) M Size: Approx. 0.93inch(2.35cm) L Size: Approx. 1.30inch(3.3cm) Package Includes: 1x Saxophone Adjustment Tool 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.