Description: Material: This insulator car battery is made of plastic, copper and iron, which is durable and can be used for a long time. Spare part: The battery disconnector can be used as a replacement part to repair an old or broken accessory. Application: With the switch of the electric battery, you can upgrade and modify the controller of the car battery according to your needs. Easy to Install: The control switch is small and lightweight, so it can be easily installed in your car. Wide Application: This battery controller has a wide range of applications, which is suitable for most kinds of vehicles, such as cars, RV, boat, etc. Specification: Material: Plastic, Copper, Iron. Color: show as picture. Size: show as picture. Note: There may be some color distortions due to different computer resolutions. A slight error may occur due to different manual measurements. Package Included: 1 Piece Battery Isolator Switch.