Features:1. Main Material: Made of durable brass.2. Maximum current: 750A3. Rated Current: 250A.4.DC 12V-24V5. Type: Top Post, Negative, Vertical.6. Apply to the top post terminal, only the negative battery post 15-17mm.7. Suitable for cars, boats, trucks, vehicles, RV, ATV, etc.8. Note: Never connect the battery disconnect switches to the positive battery terminal.9. Installation: Firstly, disconnect the cable connection of the battery. Make sure the negative cable is always unplugged, followed by the positive cable. Assemble the battery breaker on the negative cable, but do not over-tighten it. Note that the lever should always be open when the negative cable is connected and make sure the connection is good. Package Included:Top Post Knife Blade Main Switch*13439Hot Sale1.