From durability rubber, these W buffer pad absorb shock from hammer mechanisms, ensuring quiet operations and extended component life in compatible pianos models Ideal for both amateur and professional musicians, this product is to maintain or upgrades for digital piano Enhances for digital pianos with our hammer mute buffer rubber, to improve sound and extend the life of your instrument Easy installation and compatibles a wide ranging of models, these hammer mute buffers essentially keep your digital piano in top condition Perfect for home practice, studio, or live, these buffers ensuring your piano delivers consistent sound without unwanted noise