Product Description Material: Brass Dimensions: 1.18 x 0.79 x 0.79 inches Amperage: 300 Ampere Voltage: 60 volts Product weight: 3.9 ounces Quantity: 1pcs Package content: 1*M10 car power switch 1.Excellent Quality Rust and corrosion resistant, and protects the power supply from leakage and water, durable made for safety use.Made of copper and a durable plastic, it is waterproof and corrosion resistant, and has good conductivity and long service life. 2.No Worry about Dead Battery Battery isolator switch helps isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.Quickly disconnecting circuits to prevent current leakage and loss of the battery, and extend battery life. 3.Wide Range of Applications If you have a lot of car appliances installed in your car(such as audio / satellite navigation / TV / etc.), automotive battery switch disconnect will be a good choice for you, because it can effectively prevent leakage. 4.Easy to Install You can easily install a battery switch on your vehicle without any special tools and only about an hour of your time. And the key is ergonomically designed, fit perfectly on the thumb for easy of use. 5.Use to prevent battery drain when storing & repairing cars/trucks.Provides the most effective way to avoid auto theft, Cut off power on racing cars & prevent fire. Suitable for Automotive Electronics, Electrical Products And all kinds of Car, Boat, Van, Caravan, Motor, Etc.