Vice Series Gauge Reducers allow you to hook your 0 gauge wire in and plug the other end into a 4 gauge slot. Using wire reducers will give you a clean professional look and a connection that will not come apart., Vice Series 0 to 4 Gauge Reducer, 0 to 4 gauge reducer, Built to get your audio equipment running properly, 2 per pack, , , , , , , Weight (lb)0.28, Height (in)5.4,Width (in)3.8,Depth (in)1.7