Speaker Spacer for JL Audio M Series 6.5" Speaker - 0.50" - WhiteDon'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 - .50"Edge - 1/16" RoundOuter Diameter - 6.55" or 166 mmBolt Hole Circle Diameter - 5.79" or 147 mmMounting Hole Diameter - 5.25" or 133 mmCompatible With - JL Audio M650-CCX-CG-WH: 6.5-inchJL Audio M650-CCX-SG-WH: 6.5-inchJL Audio M650-CCX-CG-TB: 6.5-inchJL Audio M650-CCX-SG-TB: 6.5-inch*Sold as a Pair