Thank you for viewing. This is an extension cable with a quick connector for fish finders. Length: 4m (excluding the battery-side cable) Waterproof fuse holder (standard fuse 10A) Quick connector Connection to the battery is via 8mm terminals. The connection to the fish finder power cable requires installation by the buyer. Please cut to the required length as it is 4m long. A 10A fuse is standard, but if you contact us before purchase, it can be changed to 2A, 3A, 5A, or 7.5A. Please select according to your fish finder. Note: This cannot be used if the connected device's power consumption exceeds 10A. In addition, it can also be used as a cable for bilge pumps and live wells.