Description: This Carbon Fiber Audio CD Tuning Mat can work with almost all CD player, diameter about 12cm(4.72inch), thickness about 0.2mm(0.008inch), Center aperture 2mm(0.08inch). Cover the CD tune mat on the CD disc, it will eliminate static electricity, and absorb vibration generated by the motor which affected the CD disc, accordingly it will reduce the chance of reading wrong information from the CD disc. This high-quality CD/DVD stabilizer is great for minimizing compact disc vibrations and resonances during playback. Improved the sound quality. The overall sound becomes warmer and the bass range gains more power and extension. A basic and defining upgrade for the demanding audiophile. Improves sound quality and reduces noise. Specification: Material: Carbon Fiber Diameter: Approx.12cm/4.72inch Thickness: Approx.0.2mm/0.008inch Center aperture: Approx. 2mm/0.08inch Compatible With: fit for all Top Loading and Tray Loading CD players Package Includes: 1Piece Carbon Fiber Audio CD Tuning Mat Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.