Use to add aftermarket speakers to factory door locations. Water resistant. Sturdy plastic. Includes 2 pairs for 4 doors- 4 speaker plates and 2 tweeter plates and 4 speaker wire harness. Front have the option for 6.5" or 6x9 speakers and backs are for 6.5" speakers. Included front pillar tweeter brackets for installing component sets for the factory tweeter location. Compatible vehicles: Made for Chevrolet: 2015-2022 Colorado, 2014-2022 Silverado 1500, 2015-2022 Silverado 2500/3500, 2015-2022 Suburban, 2015-2022 Tahoe;; Made for GMC: 2015-2022 Canyon, 2014-2022 Sierra 1500, 2015-2022 Sierra 2500/3500, 2015 2016 2017 2018 2019 2020 2021 2022 Yukon