1 Pair 6 x 9" MDF Speaker Ring (Black) RING-69CBK SPEAKER MOUNTING SPACER RINGS MDF 6" x 9 Speaker Rings This product will fit in most speakers on the market. Great for fiberglass, kick pods, and baffles. Inner diameter: ID: 8 3/4", 6 1/8" (OVAL) Outer diameter: 10 5/8", 7 5/8" (OVAL) Thickness: 3/4" Width: 3/4" Please note that due to the pressed wood material used for these rings, they are very easily customizable for specific sizes. These rings can be shaved or filed for an in-between size or for a more custom fit.