Car Boat Audio Stereo Amplifier Alarm Circuit Protection Hbu 500 Amp Anl Fuse ? ANL Fuse Holder Kit ? The package includes 2pcs 500 AMP ANL Inline Fuses and 2pcs Fuse Holders with clear insulating cover. ? See-through Cover Design ? Visible through clear window to easily identify open status. Also it has a good function of water and dust proof. ? Plated For Excellent Electrical Contact?Stainless steel studs provide resistance to corrosion and high torquing for excellent electrical contact. ? Keep Your Audio System Pro ?500-amp fuses are gold-plated for great conductivity and excellent current transfer which keeps your audio system in good condition. ? High Power Application ?ANL fuses Fuse Holders are designed for the protection of high power circuits such as main battery feeds, amplifiers, inverters, and more. Ensures your equipment safety and maximum power delivery.