The Sliding Mirror Door Rollers Assembly Fit Contractors Part #W8020, a reliable addition to your construction supplies, is designed for use in a variety of applications requiring durable and efficient door control systems. These 1-1/2" nylon concave wheels are reinforced with zinc plating to ensure long-lasting durability, while the adjustable top allows for easy height adjustments to accommodate different door sizes. The set includes 4 rollers, providing a cost-effective and efficient solution for any contracting project. With a 2-5/16" hole center, this product is compatible with a wide range of doors, ensuring seamless installation and operation. Constructed with precision and quality, these door rollers are an excellent choice for contractors, remodelers, and DIY enthusiasts looking to enhance their door control systems. Simply fasten them to your door and adjust the top to the desired height for a secure and efficient locking system. Say goodbye to noisy and cumbersome door movements, and hello to a customized, high-performance door control solution with these Sliding Mirror Door Rollers Assembly Fit Contractors Part #W8020.