Specification AssemblyInstructions : The 'assembly_instructions' consist of 'step-by-step installation instructions', 'instructions and videos' provided with the product. AudioDriverSize : 15 inches AudioDriverType : dynamic_driver AudioOutputMode : Surround Brand : Springfield Speaker BulletPoint1 : The dust cap protective dome is an essential component for maintaining and repairing audio equipment such as speakers, woofers, subwoofer, and coils. It serves to shield the speaker from accidental pressure, dust accumulation, and premature aging, ensuring prolonged durability and optimal performance BulletPoint2 : Material: Paper; Outer diameter : 72mm / 2.83inch; Inner diameter : 68mm / 2.68inch; Thickness : 14mm / 0.55inch; Color : Black; Package List: 8 Pcs x Speaker Dust Caps BulletPoint3 : Crafted from grade paper, this speaker dust cap has exceptional durability, effectively resisting scratches and stretching. The rounded lip edge helps maintain a secure seal for your speaker coils, preventing dust and moisture ingress, thereby enhancing the longevity of your audio equipment BulletPoint4 : Remove the cap carefully (Use a tweezer, tape or hook, do not hurt the coils) and clean the bonded circle. Gluing a circle around the coil base on the cap's size, attaching the new cap to cover the coil and make sure it was sealed. Remove the remaining glue when everything is good BulletPoint5 : Tip: When purchasing dust caps, many customers tend to choose the same size as the original ones removed. However, it might leave visible traces of repair if the new cap is the exact size as the original. Therefore, we recommend selecting a slightly larger size when replacing it, as this not only conceals any previous repair marks but also enhances the overall aesthetics CompatibleDevices : Laptop, Desktop CompatibleWithVehicleType : Car ConnectivityProtocol : wired ConnectivityProtocol1 : Bluetooth ConnectivityProtocol2 : USB ConnectivityTechnology : wired ControllerType : Adhesive ControlMethod : touch CustomerPackageType : FFP ExternallyAssignedProductIdentifier1 : 810694021485 ExternallyAssignedProductIdentifier2 : 0810694021485 ExternallyAssignedProductIdentifier3 : 0751940149136 ExternallyAssignedProductIdentifier4 : 0714424358455 Hazmat1 : ADHESIVES Hazmat10 : CN_GroundOnly Hazmat11 : DE_LimitedQuantity Hazmat12 : EG_LimitedQuantity Hazmat13 : ES_LimitedQuantity Hazmat14 : FR_LimitedQuantity Hazmat15 : GB_LimitedQuantity Hazmat16 : IN_GroundOnly Hazmat17 : IT_LimitedQuantity Hazmat18 : JP_GroundOnly Hazmat19 : MX_LimitedQuantity Hazmat2 : UN1133 Hazmat20 : NL_LimitedQuantity Hazmat21 : PL_LimitedQuantity Hazmat22 : SA_LimitedQuantity Hazmat23 : SE_LimitedQuantity Hazmat24 : SG_LimitedQuantity Hazmat25 : TR_LimitedQuantity Hazmat26 : US_ORMD Hazmat3 : II Hazmat4 : 3 Hazmat5 : AE_LimitedQuantity Hazmat6 : AU_LimitedQuantity Hazmat7 : BE_LimitedQuantity Hazmat8 : BR_LimitedQuantity Hazmat9 : CA_LimitedQuantity Impedance : 8 ohm IncludedComponents : 2 Premium American-made Foam Surrounds, 1 Bottle of premium professional-grade adhesive, 1 Adhesive application brush, Voice coil shims IsWaterproof : FALSE ItemName : Realistic 15" Speaker Foam Surround Edge Repair Kit - 2 Speaker Kit - Compatible with Optimus 3807, 3808, 3809, 3811, 40-1008, 40-1125, 40-1131, 40-1301, AWF-00-004, Mach3, Optimus 3, Many More ItemPackageDimensions_Height : 9.9 centimeters ItemPackageDimensions_Length : 2.3 centimeters ItemPackageDimensions_Width : 8.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : speaker-surround-kits Manufacturer : Springfield Speaker Material : Foam ModelName : Optimus ModelNumber : 2A15-Opt MountingType : adhesive NumberOfBoxes : 1 NumberOfItems : 2 NumberOfPowerLevels : 1 PartNumber : 2A15-Opt PowerSourceType : Corded Electric ProductDescription : Kit includes THE BEST QUALITY foam available: 2 Premium American-made Foam Surrounds (Enough for 2 Speakers) Step-by-step installation instructions 1 Bottle of premium professional-grade adhesive (Solvent-based) 1 Adhesive application brush FREE shims available on request