1.medium auto plug-in fuse , car fuse , blade fuse 2.Zinc-blade 3,Aluminum-blade 4, ... fuse,auto plug-in fuse(auto blade fuse)mini type amp available:2A 3A,4A 5A,7.5A,10A,15A,20A ... ,25A,30A,35AMedium type amp available:2A 3A,4A 5A,7.5A,10A,15A,20A ... ,25A,30A,35A,40AMax type amp available:20A,25A 30A,35A 40A,50A,60A,70A,80A ...