This hybrid insulator kit helps improve the sound quality of any small to medium-sized speakers. Made with machined brass with gold plating and Hanenite vibration-damping rubber on top and bottom. It helps to eliminate unwanted vibrations and create a well-balanced sound. The gold plating not only helps prevent corrosion but also creates an premium look. 18mm height to ensure easy access for adjust the position of the insulators. Suitable for use on hard floor.