Check the listing for details. Speaker Spacer Ring Tweeter Speaker Spacer for 1" Wood 2 Set Universal. Condition: New. Listed at 15.99 USD. Advantage:Car audio speaker spacer ring aid in audio speaker installation, play an important part in reducing resonance and making the speakers stronger.Replace new car speaker spacers adapter, provide better sound quality,fixed speakers to reduce door resonance.The ring mounting bracket is good partner for mounting new speaker. You can install the speakers you want by adding extra depth.Material Specification:Speaker mounting bracket ring made of good wood material, will not oxidize moisture-proof, durable, wear-resistant, long service life, smooth surface, not easy to fade, no scratches.Functionality:Material:WoodFit for Speaker Dia:1"Depth:18.5mm / 0.73"Inner Diameter:43mm/1.69"External Diameter:64mm/2.52"Compatibility:Subwoofer speaker spacer is widely used in cars, boats, trucks, RVs, etc.,the speaker ring fits most 1.