Blue Sea 5056100 - Water Resistant ST-Blade Fuse Block w/Cover [5056100]5056100 Water Resistant ST Blade Fuse Block with Cover This Blue Sea fuse block provides water resistant circuit protection for ATO ATC fuses and circuit breakers in a compact footprint. Now with wing screws for toolless access. Features: Water resistant design with a standard ring or spade type terminals Allows for simple wiring with standard tools Accepts a wide range of wire sizes Includes 3 wire plugs to maintain a water resistant rating if less