- Replace damaged or missing tandem roller assemblies in patio sliding glass doors with this durable steel ball bearing roller assembly to restore smooth sliding functionality. - Features a 14-20 threaded mounting hole at the back for easy installation and an optional 10-32 threaded hole on the top of the housing for added versatility. - Designed to ride effortlessly on 1-1/2 inch diameter concave ball bearing rollers, ensuring effortless operation and longevity. - Made from robust stamped steel housing and rollers, providing superior strength and resistance to wear. Benefits: - Restore the functionality of your sliding glass door, making it easier to open and close while enhancing overall convenience. - Designed for compatibility with most standard patio sliding door systems, making it an ideal replacement part. - The quality construction guarantees high performance, reducing the need for frequent replacements. Use Scenarios: 1. Ideal for homeowners looking to upgrade or repair their aging sliding patio doors for enhanced performance and security. 2. Excellent choice for property managers and maintenance teams aiming to quickly replace faulty door rollers for tenant satisfaction. 3. Suitable for DIY enthusiasts who wish to tackle home repairs and installations, ensuring a professional-level outcome with simple installation steps. Transform your sliding door experience with this reliable steel ball bearing roller assembly.