This is an aftermarket inline blade fuse holder with a red insulated power cable and a screw/twist-on waterproof-style cap. It is a universal add-on for protecting a power feed, commonly used for car audio, amplifiers, lights, or accessory circuits. The photo shows the holder open, the lid, and a loop of red cable that can be cut to length; a fuse is not clearly included. There is no visible car-specific connector, so fitment depends on wire gauge, fuse type, and your circuit current. Before buying, check whether you need a standard, mini, or low-profile blade fuse, confirm the cable gauge and length, and make sure the holder rating matches your fuse and load.
