Nilight 2PCS Inline Maxi Fuse Holder 10 Gauge AWG Tin Plated Copper 12V Inline Fuse Holder 30A 40A Maxi APX Fuse IP67 Waterproof Maximum 60A Fuse Link for Car Truck Marine Boat, 2 Years Warranty. High-quality polyamide cover outside and Red cooper tube inside allows the connectors to Bear high temperature and also has a good ability to conduct electricity. Specially designed cap for tight sealing, efficiently prevent water and dust from entering, upgrading waterproof performance.