Nautique FC5 Upper Tower Adapters for installation of 1 pair of tower speakers in the top factory locations. CNC Machined from billet aluminum to assure a perfect OEM fit. Compatible with REV 10X, REV 8X and ICON 8X and for full swivel and quick disconnect options, the REV 10 SXM, REV 8 SXM and ICON 8 SXM using the removable flat base mount of the TC3 swivel clamps. Available in a nice brushed finish. Mounting bolts included.