Bolt-Down Fuses here are offered to you from the creators of the "Diffusion Pill Technology", LittleFuse Inc. The Bolt-Down fuse types are for High Current Protection, coving the ranges of 50 - 200 Amp circuits. Being the most ideal protection application for your battery and alternator protection as well as other applications requiring heavy gauge wire and ultra-high current protection, LittleFuse brings you the best and only option. Please browse the selection we offer and give us a chance to save you money with our always low and competitive pricing at All Battery Sales and Service.