Features: The fuse holder has good mechanical strength, insulation, heat resistance and flame retardancy, and not easy to break, deform, burn and short circuit in use. Made of PC material, with excellent electrical insulation, extensibility, dimensional stability and corrosion resistance, and a wide temperature range. Total 20A high output: by taking power directly from the main power supply, the burden of the original electrical equipment can be reduced and the output can be improved. Equipped with ties and 3M-glue, easy and convenient to install. The product can be connected to the lines of 4 groups of electrical appliances on the vehicle, which makes the wiring easier and convenient, and the lines are not messy, so as to prevent potential safety hazards. Has LED indicator light design, which corresponds to the electrical appliances connected to each fuse. When the circuit powered on normally, the indicator light blue; When the fuse disconnected, the red light will be on, so you can immediately know which fuse broken, convenient to deal with, so that your travel will be safe. Specifications: Material: Plastics Input Voltage: 12V Output Current: 20A Size: Approx. 9.6x4.5cm/3.78x1.77in Note: Fuse Function: 1. When the circuit breaks down or abnormal, the current increases continuously, and the increased current may damage some important or valuable components in the circuit, or burn the circuit or even cause a fire; Fuses protect electronic equipment from excessive current and serious damage caused by internal faults of electronic equipment. 2. If the fuse correctly placed in the circuit, the fuse will fuse and cut off the current when the current abnormally rises to the upper limit height and temperature, thus protecting the circuit operation. 3. Each fuse has a rating. When the current exceeds the rating, the fuse will blow. Package includes: 1x Host 2x Ties 1x Circular Terminal Connecting Wire 4x 5A Fuse 1x 3A Fuse 1x 2A Fuse 1x 3M-Glue 3x Ship Type Wiring Clamp