This is a copper jumper strap normally used with the ground wires in the spa. These are mounted on the back of the pumps connecting the ground wire. Is part of the connections from the heater to the PC Board.
The combined Bluetooth Stereo & Subwoofer with remote from Aquatic AV brings a fuller and richer sound to your hot tub or swim spa. Upgrade your spa experience with a 288-W amplifier capable of supporting four full-range speakers.
Regular-sized snap cap to cover the screws on your hot tub or spa. Hide rusty screws and keep them out of sight. This unit is in a espresso (dark) color.