Use to add aftermarket speakers to factory door location. Water resistant- Sturdy plastic. Includes 2 pairs for 4 doors- 4 speaker plates. 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: 2023-2024 Colorado, 2023-2024 Silverado 1500/2500/3500, 2023-2024 Suburban, 2023 Tahoe; Made for GMC: 2023-2024 Canyon, 2023-2024 Sierra 1500/2500/3500, 2023-2024 Yukon