ITEM NAME:Dual Battery Selector Switch Disconnect Marine Boat Rv Vehicles 1-2-Both-Off Hn Specification: OFF: The switch is in the off position ON: The switch is in the closed position Product material: screw copper tin plated Screw diameter: 10MM Rated current: 300A (12V) Instantaneous current: 1000A (12V) Scope of application: yachts, automobiles, trucks,motorcycles.. Product function: protect the power supply and prevent leakage Package includes: 1X battery switch 4X mounting screws.1X battery switch. OFF: The switch is in the off position. ON: The switch is in the closed position.