Overview With a simple. easy-to-use design. this hybrid insulator helps improve the sound quality of any small or medium sized speakers. Each six-piece set includes three insulators for both the left and right speakers to easily create your ideal sound. At 18 mm high. the insulators make it easy to adjust the position by sliding your fingers under the speaker. Key Features 3-layer construction of machined brass with gold plating and Hanenite Take advantage of extended high frequencies with the clear resonance of brass enhanced with gold plating. The Hanenite vibration-damping rubber on top and bottom also helps eliminate unwanted vibrations for improved mid- and low-frequency sounds. Clear highs with lively mids and lows for a well-balanced sound The superior performance of the brass and vibration-damping rubber help to create a well-balanced sound. while the gold plating not only helps prevent corrosion but also creates an appealing look. 18 mm design ensures easy access for simple positioning The 18 mm design makes it easy to reach under the speaker to adjust the position of the insulators.