- Effortless Operation: The car battery disconnect key features an enlarged handle for easy turning of the knob. This design allows you to swiftly disconnect or restore your vehicle’s power supply without straining your hands. - Package Includes: This set comes with 4 red battery disconnect keys. Each key measures 48 x 43 mm and fits standard battery disconnect switches with a shaft diameter of 10 mm, ensuring broad compatibility for most vehicles. - High-Quality Material: Constructed from durable plastic and solid brass nuts, this battery disconnect key offers superior wear resistance. It is designed to be corrosion and rust-resistant, providing dependable and long-lasting performance. - Reliable Battery Disconnection: With this battery shut-off key, reliably disconnect your vehicle's power supply to prevent battery drainage when not in use, ensuring your battery retains charge for future starts. - Practical Applications: Ideal for use in vehicles during long-term storage, preventing battery drain in RVs or cars not in regular use. Also useful for temporarily disconnecting the battery during maintenance or repairs to enhance safety. This battery disconnect key is the essential accessory for maintaining your vehicle's battery health with ease and reliability.