Specification: The 12v power distribution block includes: 1 x Input hole (0/2/4 Gauge In), 2 x Output hole (4/8/10 Gauge Out),With Cover: The power distribution block car audio will come with a cover, which can shelter the exposed contact, prevent dust and accidental contact after installing, and protect your audio system,Easy to Install: The car audio distribution block is simple build and easy to use, requires no wiring lugs when install,Superior Material: Our ground distribution block is made of solid brass gold plated, it has good electrical conductivity. The heat resistant Base also makes it safer to use,Wide Application: The 0/2/4 gauge in, 4/8/10 gauge out distribution block is suitable for the audio systems of automotive, car, truck, marine, boat, etc