Specifications 24 Goldwood Sound SG-M12 Black Metal Steel Mesh Snap On Grills Heavy Duty De-burred Steel Grills Fits Most 12 Woofers Each Comes with one Mounting Ring with 8 Hole Pattern and one Snap On Mesh Grill Mounting Hole Pattern of 11.75 from center to center across Overall Measurement of 12.625 Round and .5 High Requires Flat Head Screws that are NOT Included Designed And Engineered In USA Applications: Speaker Cabinet Home Speaker Car Speaker This Listing and Price is for 24 Grills