Speaker Spacer for Infinity Kappa Series 8" Speakers - .25" - 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 - .25"Edge - 1/16" RoundOuter Diameter - 9.5" or 241 mmBolt Hole Circle Diameter - 8.09" or 205 mmMounting Hole Diameter - 7" or 178 mmCompatible With 8" Reference:KAPPA8130MAM and KAPPA8135MAM*Sold as a Pair