Description: Reasonable wiring: Installed multi-power supply cables can be divided. Material: Made of high quality zinc alloy material, durable and easy to use, high efficiency. With cover: The protective cover is made of shell. Wiring hole: 1 0GA in 4 out Applicable: suitable for car, RV, ATV, boat or other vehicles to protect the vehicle audio amplifier system. Specification: Material: alloy material Size table: Size: 0.5cm screw hole mounting base /0.20 inch (Approx.) Inlet 1.3cm/0.51 inch (Approx.) Outlet 0.95cm/0.37 inch (Approx.) Fixing screw size M8 * 10mm/0.39 inch (Approx.) Package includes :1 piece power distribution block Note: Please allow slightly errors due to manual measurement and different monitors.