DS18DBAR-2 can be linked with up to four batteries for those who arebuilding a "LOUD" car audio sound system. The Distribution Bar Block can handle the high-power distribution ensuring that your wiring's connected securely, neatly, and safely. Highlights Terminal chrome plated High conductivity material This product has 15 screw down 4/0 AWG and 3 screw down 6/0 AWG