at first glance , I do not think my 20 foot 4 gauge jumper cable would even fit into this bag . but they fit without much effort and there be still room for a few thing to fit in the bag . I also fit a 20 foot extension cord in addition to the jumper cable . I also put some temporary tire repair item in there as well , all fit fine . do not take up much space and can hold quite a lot . I be satisfied with this purchase .