(2) Pair of Metra 72-4500 Speaker Wire Adapters for GMC Vehicles - 4 Total Adapters Speaker Harness Adapters for select Buick, Cadillac, Chevrolet, GMC, Nissan, Oldsmobile, Saturn Vehicles Connects speakers to factory harness 4 Total Harnesses Included - 2 Pairs Included Plugs directly into aftermarket car speakers Includes retention tab for factory wire retainer