- Center Rotating Threaded Shaft Key: This essential component is designed to optimize the functionality of your musical movement, ensuring smooth operation and enhancing performance. - Dimensions: The product measures 5.3 cm x 4.6 cm x 3.7 cm without the key and 5.3 cm x 4.6 cm x 4.5 cm with the key, making it compact and easy to integrate into your existing setups. - Style: The center rotating threaded shaft key is specifically tailored for musical movements, providing a reliable solution for your mechanical music box or similar devices. - Installation Tip: For best results, ensure the product is not placed on hard surfaces like wood or glass, as this can affect its functionality and durability. Use Scenarios: 1. Music Boxes : Perfect for replacing worn-out components in traditional music boxes, restoring their enchanting melodies. 2. DIY Projects : Ideal for hobbyists and crafters creating unique musical devices, enhancing projects with reliable performance. 3. Repairs : A great solution for repairing musical movement mechanisms, ensuring longevity and smooth operation. This center rotating threaded shaft key stands out for its combination of functionality and compatibility, making it a must-have for anyone serious about maintaining or creating quality musical instruments.