WATER-RESISTANT---This battery master switch comes with 2 keys and a weather cover. The red keys can snug fit to curb battery drain and theft. The black cover can prevent dust and water, prolonging their lifespan. Product Dimensions: 3.74 x 3.03 x 2.76 inches; 4.97 ounces. Item model number: ddkg-6. Date First Available: March 10, 2023. Manufacturer: kiimiles. ASIN: B0BY2S7HVD. Country of Origin: China. NO BATTERY DRAIN---This keyed battery disconnect switch provides a reliable way to shut down electrical power during maintenance and protect batteries from excessive drain. It also acts as a deterrent for car theft. This battery kill switch can be found in boats, RVs, and some cars. Rust and corrosion resistant. Solid brass nuts and washers. Easy to Use: The car battery disconnect switch is designed for easy operation, allowing you to quickly and conveniently disconnect the battery when not in use. This marine battery switch is also compatible with 12v 24v 48v equipment batteries, making it a great addition to your car. Service: Our products will undergo strict inspection before shipment to ensure there is no problem in quality. Buy with confidence. If you have any questions about the product, please contact us and we will help you resolve all issues as soon as possible.