•It is used to protect the power supply and prevent leakage, the stud is positive and negative •Scope of application: cars, trucks, vans, yachts, SUVs, caravans, etc •Made of high-quality materials, it's sturdy and durable, anti-rust and anti-corrosion, easy to operate and easy to install •Brass has good electrical conductivity •Equipped with a dust cover to prevent the infiltration of dust and rain, the product has a long service life •How to use: When the key is pulled out, it is in a power-off state. Insert the key, press down and turn the key clockwise to turn on the power Specification: •Product material: ABS, brass •Product voltage: 12V/24V •Rated current: 200A •Maximum current: 500A •Bolt: 8mm Package included: •1 x Battery Switch •1 x Key •1 x Anti-lost Keychain •4 x Shrinkable Tubes (Φ: 16) •4 x Copper Terminals (2*5/16)