Specification: Frame Material: ABS Plastic Mesh Material: Cold Rolled Steel Outer Diameter: 274mm / 10.79 inch Inner Diameter: 236mm / 9.29 inch Screw Hole Diameter: 4mm / 0.16 inch Diagonal Center Hole Distance: 260mm / 10.24 inch Package Content: 1 x Speaker Grill with Screws Description: Distribute screws, make you more convenient installation. Great for speaker cabinet, home speaker or speaker. Protect your Subwoofer from cuts, rips, tears and dents. NOTE:Fit for 10 inch speaker