uxcell Automotive Car Stereo Audio Speaker Spacer Adaptor Holder 2 Pcs Product Name : Car Speaker Spacer;Material : Plastic;Fit Speaker Diameter : 6" Depth : 14mm / 0.55";Inner Diameter : 140mm / 5.5" External Diameter : 176mm / 6.9";Mounting Hole Diameter : 4.4mm/ 0.17" Mounting Hole Center Distance : 146mm/ 5.7";Color : Black Package Content : 2 Pcs x Car Speaker Spacers