On/off battery isolator for car RV boat 15-17MM negative terminal1. Easy to Operate: Mount our Battery Disconnect Switches onto the negative battery terminal for quick and easy installation without the need for any additional battery cables or lugs<br> 2. Dependable Functionality: Our battery disconnect switches isolator features a sturdy and rugged construction, ensureing a safe and dependable operating. Be confident in its great performance and stable working conditions, even in extreme weather conditions<br> 3. Improved Safety: Utilizing our Battery Disconnect Switches Isolator with waterproof design will extend the lifespan of your equipment, prevent accidental disconnections, and protect batteries and electrical systems, making it a dependable choice for any project<br> 4. Optimized Setup: Keep your electronic system neat and tidy with this battery disconnect switches isolator that can be fixed directly to the negative terminal on top of the battery. A streamlined installation process saves space and eliminates the need for additional cables or connections.<br> 5. Wide Application: Shield your car, motorcycles, boats, caravans, campers, and all kinds of electrical equipment with our Battery Disconnect Switches Isolator. This easy-to-install switches improves both convenience and security, making it ideal for a wide range of applications.<br> Easily isolate and secure electrical systems with our Top Post Battery Disconnect Switches. Stable working extends equipment life while saving space.<br> Colour:<br> Material:Metal+ABS<br> Package Contents:<br> 1 * Car Power off Master Switches<br> Only the above package content, other products are not included.<br> 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.