This alligator clip works with 12-volt and 24-volt devices. It is used in emergency situations. Clamp made of plastic and copper plated metal. Red color is positive and black color is negative. 30A fuse protection ensures safety in case of short circuit and prevents damage to devices caused by high current surges. Extension cable length: 3 feet/1 m. Fits most vehicles: Clips attach directly to the vehicle's battery and allows high-power devices to use power, saving the car's cigarette lighter. Quickly disconnect when needed: Create connections that can be disconnected in seconds. Use these quick disconnect pliers on a boat, car, motorcycle, etc. Package Dimensions ‎18.7 x 11.7 x 2.1 cm; 160 grams