Speaker Spacer for Infinity Reference Series 8" Speakers - 1" - BlackDon't have enough depth to install your speaker/subwoofer? Problem solved these spacer rings give you that extra space needed to mount your speaker/subwoofer.Specifications:Thickness - 1"Edge - 1/16" RoundOuter Diameter - 8.78" or 223 mmBolt Hole Circle Diameter - 7.72" or 196 mmMounting Hole Diameter - 6.77" or 172 mmCompatible With 8" Reference:822MLW and 822MLT*Sold as a Pair