4 Pcs car speaker spacers are made of wood material. Package Includes: 4 Pcs Car Speaker Spacer Rings. Fit for Speaker Dia: 6., 5; Thickness: 15mm / 0., 59; Inner Diameter: 145mm/5., 71; Outer Diameter: 185mm/7., 28; Weight: 440g 3 Inch Speaker Installation X AUTOHAUX 2Pcs 3 Speaker Spacer Rings - 7mm Acrylic Mounting Plates For Car Audio Installation Acrylic Speaker Rings 4 Pcs 6.5" Universal Wooden Car Speaker Subwoofer Mounting Spacer Rings Adapter Bracket Holder Plate. Choose the right speaker spacer rings to directly install and fix on the speaker. 4 Pcs car speaker spacers are made of wood material Improvement for sound quality., The spacer fits 6., 5 speaker. Specifications:Condition: Brand NewMaterial: WoodColor: Khaki Fit for Speaker Dia: 6., 5Thickness: 15mm / 0., 59Inner Diameter: 145mm/5., 71Outer Diameter: 185mm/7., 28Weight: 440gNote:Please make sure this part fits your vehicle before orderingPlease allow 1-2mm error due to manual measurement. Good for Universal car audio modification project. Universal product fits most speakers on the market, can be used in Cars, Boats, Trucks, RV, more. It serves as a car speaker stand. Features: Can be used to protect the speaker from rain and prolong its service life. Universal product fits most speakers on the market, can be used in Cars, Boats, Trucks, RV, more. This car speaker spacers are made of wood material, easy to install. Improvement for sound quality. The spacer fits 6.5 speaker. Specifications: Condition: Brand New Material: Wood Color Fits most speakers on the market. Underseat Subwoofer 1 Pair 6.5 Inch Car Coaxial Speaker Adapter Horn Support Stand Car Speaker Base Subwoofer Mounting Bracket Universal Type - 34 Car Audio Installation Spacer Kit