Specifications:Frame Material: ABS PlasticMesh Material: Cold Rolled SteelFit for: 4 x 6 inch speakerScrew Hole Diameter: 4.5mm / 0.18 inchOverall Size: 179x122mm / 7.05x4.8 inch(LxW)Long Hole Center Distance: 122mm / 4.8 inchShort Hole Center Distance: 73.5mm / 2.89 inchDiagonal Center Hole Distance: 141mm / 5.55 inchFeatures:Great for speaker cabinet, home speaker or speaker.Protect your Subwoofer from cuts, rips, tears and dents.DIY speaker grille, suitable for DIY speakers and cars speaker decorative circle.Package Includes:2 x Speaker Grill Cover