This is a set of four piano insulators. They have been used for over 20 years, so there is some soiling and wear, but they should still be usable. Please check the images for details on the condition. 《Size》 ・Diameter: Approximately 15.2cm ・Height: Approximately 4.7cm ・Weight: Approximately 660g/piece Please refrain from purchasing if you are sensitive to used items, as they have been stored by a private individual. If you have any questions, please feel free to comment.