Double-check Before Order: it is designed ONLY for 2019-2026 Chevy Silverado 1500, 2020-2026 Chevy Silverado 2500HD/3500HD; 2019-2026 GMC Sierra 1500, 2020-2026 GMC Sierra 2500HD/3500HD. DO NOT FIT 2018 or older Chevy Silverado and GMC Sierra truck models. DO QUICK TEST : if the credit card can't be vertically put into the holes, it FITS your truck; vise versa. Install in Seconds: Install the bed rail caps in seconds by pushing or tapping directly or with the help of a simple hammer. Fit Snugly without Bouncing Out: it fits with your truck bed rail without gaps. The additional non-slip cotton mat makes it fit tighter and prevent from bouncing out. The edge is thickened to make the stake pocket covers more sturdy and not easy to break. Don't Let Winter Freeze Your Truck Bed: Tired of digging ice out of your stake pockets? These stake pocket covers seal the holes tight, keeping out heavy snow and freezing rain. They prevent water from pooling and freezing inside, and shield your truck from corrosive road salt. No More Holes, No More Winter Woes. High Quality Material: Made of premium ABS material, high temperature resistant, will not expand nor fade. Bed Rail Stake Pocket for GMC Chevy Silverado/GMC Sierra 2500/3500HD(2020 2021 2022 2023 2024 2025 2026), Chevy Silverado/GMC Sierra 1500(2019-2026), Truck Rear Caps Bed Rail Holes Covers (2PCS) (Red/Blue）