Specifications: Type: Round hole-round shape Material:PP plastic, Good toughness and durability Color: Black Inner diameter: 8.9" Outer diameter:9.95" Two screw holes center spacing: 9.5" Usage: Protect your subwoofer from cuts, rips, tears and dents Note: Manual measurement, please allow slight errors on size. You will receive: 2pcs Speaker Grills Cover Case with mounting screws