Upgrade your truck with the BackRack 40122 Low Profile Tonneau Hardware Kit, designed specifically for 2019 and newer Silverado and Sierra models. This hardware kit replaces the standard rail mount hardware, allowing your toolbox to be installed flush against the BackRack*, eliminating any unsightly gaps. The innovative design ensures your toolbox fits securely without the need for drilling into your truck bed, making installation quick and hassle-free. The BackRack Low Profile Tonneau Hardware Kit is perfect for those who want a clean and streamlined look while maximizing functionality. With a standard length of 21 inches and an optional 31 inches available, this kit adapts to your specific needs and enhances your truck's overall appearance. Whether you*re a weekend warrior or a daily driver, this hardware kit is a must-have accessory for your Silverado or Sierra. <b>Features:</b> * Replaces standard rail mount hardware for a seamless look: Replaces standard rail mount hardware for a seamless look * Allows toolbox installation flush against BackRack*: Allows toolbox installation flush against BackRack* * Eliminates gaps between toolbox and BackRack*: Eliminates gaps between toolbox and BackRack* * No drilling required for easy installation: No drilling required for easy installation * Standard length of 21 inches; optional 31 inches available: Standard length of 21 inches; optional 31 inches available