Monster 300 MIDI In-Line Fuse Holder 4 or 8 AWG (MPC P300 MIDI PFS) MIDI style fuse has excellent current capability and ratings from 30 to 150 amps Clear polycarbonate for visual inspection and water resistant for reliability A combination of high performance, ease of installation, and attractive appearance 300 series exclusive Polished Black Nickel Finish Suitable for 8 and 4-gauge power cable