Monoprice Origin Direct Burial Series Speaker wire feature a robust moisture resistant polyethylene jacket paired with a water blocking tape, providing many years of reliable conductivity. Available in a variety of lengths and gauges, you can choose two-conductor versions, for connecting a single speaker, or four-conductor versions for connecting speaker pairs. The 100 percent pure oxygen-free copper conductors are sheathed in color-coded jackets contained within the main moisture resistant jacket. Monoprice Origin Direct Burial Series Speaker wire is the ultimate speaker wire for outdoor commercial and residential installations.