Clean up your messy wiring and prevent engine noise with this easy to use bus bar/distribution block. Using a 3/4" HDPE Body, a 1/4" Aluminum Bus bar (or copper), 3/16" Clear Acrylic cover and all Stainless Steel hardware (or copper), this high-quality product is all you need to install multiple amplifiers (and other 12v Devices) to one central location. Available in both half block (6 ring terminal spots) or a "Split Block" (12 Ring terminal locations). Can be used as a grounding block or positive distribution. Available in several different colors (see options below) Accepts any ring terminal with 5/16" Hole Made in California, USA!