2 IN1 FUNCTION: This distribution fuse block is for power and ground. Fuse block Input: 2 x 0/4GA, Output: 4 x 4/8GA. Battery distribution 2 IN 4 OUT: Input: 2 x 0/4GA Output: 4 x 4/8GA. RED LED INDICATOR: The Red LED warning light on the fuse box will light up immediately when the corresponding fuse is blown. It is very safe and easy for you to find the problem and replace the blown fuse. MINI ANL FUSES INCLUDED: The fused distribution block will come with three pairs of MI-DI fuses, including 2 x 30A, 2 x 60A, and 2 x 80A fuses, providing more decisions for different situations. DURABLE AND DUSTPROOF: All copper material, better conductive effect. Contact connectors are plated with sand nickel, which will not fade over time. The removable plastic case helps protect the device and is dustproof for safer use. WIDE APPLICATION: Car stereo ANL blade fuse holder distribution block is suitable for the amp or stereo audio system, Solar Panel, Battery of automotive, car, Camper, Truck, Trailer, UTV, Marine, Boat, etc. size:16 x 9 x 3.4cm Material: Plastic+metal colour: As shown Package Contents: 1 x fuse box 2 x wrench 12 x screws