Product Name: Piano Slow Down Device Product color: black, gold, silver Product material: aluminum alloy and high-quality hydraulic Product application: piano Product size: 102x28x77mm Product weight: 150g Specifications: 1. Alloy material structure, strong and sturdy the product is made of all-alloy material, it can be used for a longer time, has a waterproof function, and is not easy to rust. 2. The hydraulic resistance is designed to make the piano cover fall slowly when it is closed, so as to prevent the children from hurting the fingers of the piano. 3. The silent double pulley design, the force is more balanced, does not hurt the piano, and the navigation piece is fixed, so that the slow down process is smooth and unimpeded. 4. The slow-down device is glued to the piano with soft glue, which is not easy to fall off and does not hurt the piano. 5. The weight of the piano cover is relatively heavy, and the installation of the navigation sheet can avoid damage to the piano. Package Included: Piano bufferx1 Notes: Please understand that 1-2cm may cause errors due to manual measurement. Due to different monitor settings, the color deviation may be different.