ultra compact Maxi master fuse block is easy to install and allows you to accurately fuse your amplifier with a reliable, genuine MAXI fuse. OmniSert captured wire receptacles accept various size wires from 8 AWG to 4 AWG, without the need for adaptor sleeves. Forged and machined brass construction with marine grade stannum plating. A high temperature polycarbonate base and hinged cover provide insulation and protection. Requires 1 MAXI Fuse, appropriately rated for the equipment being connected. These are sold separately. Fuse can be pulled and inserted without removing the cover.