Features:Anti-Theft Battery Protection: The removable key feature provides a secure way to disconnect the power supply when the vehicle is not in use, prevents theft or accidental power activations.Material: Rust and corrosion resistant, Solid-Copper Terminals for the best performance and longest lifeFunctional: Suitable for professional racing and car modification, installation is simple, safe and convenient.Application: Used for Car, Vehicle, RV and Boat, also electrical equipment's switch.Battery cut-off switch can be easily installed in a variety of locations, including the dashes or near the battery itself.Notice:1.Actual color may be slightly different from the image due to different and light effect2.Please allow 1-3cm deviation due to manual measurement Description:Product specifications: four holesDiameter: 57mmConnection: M10 copper-bolt