Upgrade & Thicken: A pair of 12V power distribution block, includes a red and a black power distribution block(Positive & Negative). Our 12V Bus Bar also features 5MM Thicker Copper Bus Bar Plate which can be connected to range of cables. 3/8Inch Stud: The battery bus bar terminal block includes 4 x 3/8Inch studs terminal, which makes the 12V junction block to accept large size terminal connectors and wires. The nylon bottom is also secured by M10 post which makes it more fixed and 't strip. Protect Cover and Nuts: Each power busbar will come with a protect cover and two nuts, which helps to shelter as much exposed area as possible to reduce the risks of accidental contact and prevent short circuit, makes the circuit . Wide Application: The 12 volt bar with cover to make the wiring of circuit become neat and tidy, preventing mess harness from causing electric short circuit, it is suitable for automotive, car, truck, marine, boat, solar wiring. Colour:Black & Red Material:PC+Copper+Stainless Steel Package Contents: 1 Distribution Block Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.