Compatible with Daihatsu and Suzuki vehicles. Two inner baffles for domestic 17cm speakers. Outer diameter: Approximately 165mm, Inner diameter 142mm, Thickness 13mm, 2 pieces. Material: MDF (unpainted) Applicable vehicles: Daihatsu: Move, Mira, Tanto, Thor Suzuki: Wagon R, Every, Lapin, Spacia, Hustler, etc. *Please refer to the hole positions in image 3. Shipping method: Yu-packet Post (with tracking and compensation)