Description: Application: This switch is suitable for all standard 15-17MM size cone top terminal battery terminals. Material: Made of zinc alloy copper plated, waterproof, anti-rust and corrosion, durable and safe to use. Function: Used for battery to isolate and fix the electrical system, eliminate the power consumption of the battery when the vehicle or boat is not in use, prevent leakage, protect the power supply, and disconnect the battery safely. Scope of application: cars, RVs, yachts, trucks, trucks. How to use: To turn on the power, just tighten the green knob by hand, and then loosen the green knob to disconnect all power. Specification: Packing method: PE bag Installation aperture: 15-17MM Product material: zinc alloy copper plated Rated current: 100A Instantaneous current: 300A Installation position: battery negative pole Size Chart: 7x2cm/2.76x0.79inch Package Includes: 1 Piece Battery Pile Head 1 Piece Red and Green Protective Pad