GMC & Chevrolet Bedside Rail System  Integral Rails: The first step to optimizing your truck bed. Add this rail within minutes and unlock the endless accessory options that can be added to it.  Slide-N-Lock: The cleat system locks and unlocks with the twist of a handle. Unlock, slide to your desired position, and lock it in place. Change cleat positions within seconds.  Comes with two tie-down cleats on each rail (four total). Explore other accessory options such as Packout Panels and Track Nuts to add whatever you can think of.  More Accessories Coming: The Integral Rail systems will have many new accessories coming soon. Including quick clamps, strap mounts, bike mounts, and many more options.  Bolts directly to the factory, bedside mount holes on 2019+ Chevrolet Silverado & GMC Sierra 1500. Features .2" thick extruded aluminum rail. Anodized black.  Toggle Bolt System for easy installation.  2 cleats included with each rail  Slide and lock system to easily change cleat positions.  Rust-resistant, coated stainless hardware. Additional accessoies available.  Fitment Bolts directly to the factory, bedside mount holes on 2019+ Chevrolet Silverado & GMC Sierra 1500. Not compatible with Carbon Pro beds.  Please review the model and bed length options. Does not fit long bed HD's.  Tonneau covers do not affect the fitment.  Does not work with plastic bed inserts without trimming. Spray-in bed liners are okay. Everything needed to install is included, including instructions. Patent Pending Design and specific feature patents pending.