Screw Hole Diameter: 4mm / 0.16 inch; Diagonal Center Hole Distance: 167mm / 6.57 inch
Distribute screws, make you more convenient installation.
Great for speaker cabinet, home speaker or speaker.
Specification: Frame Material: ABS Plastic Mesh Material: Cold Rolled Steel Outer Diameter: 185mm / 7.28 inch Inner Diameter: 146mm / 5.75 inch Screw Hole Diameter: 4mm / 0.16 inch Diagonal Center Hole Distance: 167mm / 6.57 inch Package Content: 4pcs x Speaker Grill with Screws
Description: Distribute screws, make you more convenient installation. Great for speaker cabinet, home speaker or car speaker. Protect your Subwoofer from cuts, rips, tears and dents.