["Description:\r\nbrand new and high quality\r\nFeature:\r\nBass radiator is used to replace the inverted tube and adopts the radiator to make subwoofer and traditional back subwoofer.\r\nThe sealed box can get rid of the wind noise that is caused by the inverted pipe mouth.\r\nAllow you to tune the passive radiator to obtain the for ideal tuning frequency and additional without any additional amplifier power or enclosure volume.\r\nDramatically increase subwoofer efficiency and capability for ultra-low frequency reproduction at high decibel levels.\r\nVibration membrane only, other accessories demo in the picture is not included!\r\n\r\nSpecifications:\r\nItem Type: Vibration Plate\r\nMaterial: Rubber + Metal\r\nOuter Diameter: 62mm/2.4in\r\nColor: As shown in the picture.\r\nQuantity: 2pcs\r\n\r\nNote:\r\nNo retail package.\r\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\r\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage Includes:\r\n2 x Vibration Membranes"]