12 pin molex connectors, prewired with 5 inch pigtails. Wires are 18 gauge. Can be used for car audio, automotive, home theater system wiring, arcade wiring, hvac, boats, trucks, trailers, atv's and more. **Side note from seller. If this item is ever listed out of stock, it will only be temporary until more get kicked through the system. Please refer to (order from) the other listing of this without Prime option. Those are sent directly from our personal hub day after being ordered. We have several thousand of these, and will note here in description when we are running out for good. They are also available through us on the bay of E's as well.