New Product Adjustable-Tension Single Double Bass 5th String Tuner Machine for Single Tuner Replacement

New Product Adjustable-Tension Single Double Bass 5th String Tuner Machine for Single Tuner Replacement. Precision Tuning: 100% precision ensures accurate tuning for single and double bass instruments. Durable Metal Build: Constructed from high-quality metal for long-lasting performance and reliability. Professional Grade: Designed for professional use with exquisite craftsmanship and elegant finish. Locking Mechanism: Features a secure locking system to maintain stable tuning tension. Customizable Design: Offers full customization and flexible options to match specific design requirements. Versatile Application: Ideal for mid-to-high-end pianos and single tuner replacement needs.