Features: Accuracy engineered upright piano action mechanism delivers consistent key strikes accuracy for enhancing musical performances, featuring high sensitivity wooden联动杆. Advanced quiet operations under 30dB and modular design enable tool free installation within 5 minutes, optimizing upright piano accessories for seamless upgrades. Ideal for professional pianists, music teachers, studios, and instrument shops requiring reliable piano action parts for performances or maintenance. Perfect for noise sensitive home practice spaces, live performances setups, and multiple brand piano workshops demanding quiet, accuracy components. Crafted from durable wood with universal compatibility across standard upright piano models, this piano action mechanism ensures longevity and brand adaptability. Specifications: Dimension:8.4×11.8cm/3.31×4.65in Component:Wood Package Includes: 1pc Vertical Piano Action note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.