BACKRACK BLACK STEEL TOOLBOX BRACKETS ; SUPER DUTY 17-22 Easily attach this high-quality BACKRACK BLACK STEEL TOOLBOX BRACKETS to your truck for a durable and secure storage solution. Whether you're carrying heavy or light loads, you can trust in the reliability and strength of this product. These heavy-duty toolbox brackets are built to last, providing you with a durable and reliable way to secure your toolbox to your truck. With a weight capacity of 250 lbs, you can trust that your tools will stay safe and secure while you're on the road.