Enhance your patio door's functionality with this high-quality roller assembly. Crafted from durable mill steel, it ensures smooth and reliable operation of your sliding doors. This set includes two roller assemblies, each measuring 1 inch in diameter and 5/16 inch in length, making it a perfect fit for various door types. Enjoy the ease of installation and the improved performance that these rollers provide, ensuring your doors glide effortlessly for years to come.