Asdomo Car Auto Stereo Audio Inline Ga Awg ANL Fuse Block/Holder with 0 2 4 Gauge 100 Amp 100A Fuse High amperage water resistant fuse holder.Clear molded top cover and base with angular design. Uses: mainly used to connect audio power lines. Two-way protection circuit. Role: to prevent excessive current, protection appliances. Specifications 100A and other options. This Will Protect Your Stereo System and Will Make Your Install Look Great.