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" Round Outer Diameter - 8.78" or 223 mm Bolt Hole Circle Diameter - 7.72" or 196 mm Mounting Hole Diameter - 6.77" or 172 mm Compatible With 8" Reference:822MLW and 822MLT*Sold as a PairThis product may not be returned to the original point of purchase. Please contact the manufacturer directly with any issues or concerns. Specifications: Type: Mounting Brackets Box Dimensions: 3"H x 9"W x 9"L WT: 1.8 lbs UPC: 616050459332