Clean up your messy wiring and prevent engine noise with this easy to use bus bar/distribution block. Using a 3/4" PVC Body, a 1/4" Copper Bus Bar, 3/16" Clear Acrylic cover and all Copper hardware, this high quality product is all you need to install multiple amplifiers (and other 12v Devices) to one central location. Can be used as a grounding block or positive distribution.