Someone is cheating. The listing says 12 gauge wire, the packaging says 12 gauge wire, but the wire clearly says "14 AWG" which is 18 SAE so it's in no way related to the advertised 12 gram wire. wire matches. Even if it is not clear that the "MINI" fuse is smaller than the ATO / ATC, then they do not fit in this holder. Littelfuse used to be a famous brand, this is very unexpected and disappointing. And it could be a performance or fire issue. When they contacted Littelfuse, they said the…