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% pure oxygen-free copper conductors are sheathed in color-coded jackets contained within the main moisture resistant jacket. Backed by Monoprice's Lifetime Warranty; Monoprice Origin Direct Burial Series Speaker wire is the ultimate speaker wire for outdoor commercial and residential installations. Features: Water resistant jacket provides years of outdoor worry free conductivity Burial Rated Speaker Wire 2 or 4 color-coded conductors 100% pure; bare; oxygen-free copper conductors Available in various lengths and gauges