Feature Highlights: 1. Stable Axis Guidance – The rail with integrated olive-shaped nylon rollers keeps your door securely on track during manual or motorized operation, ensuring smooth and consistent movement. 2. Durable Nylon Rollers – Equipped with slim, high-strength nylon rollers that resist impact, abrasion, and extreme temperatures while offering excellent chemical resistance. Ideal for replacing worn or broken wheels. 3. Heavy-Duty Steel Construction – Made from robust steel for reliable indoor and outdoor use, providing long-lasting performance in various environments. 4. Easy Installation & Replacement – Designed for simple setup and maintenance, compatible with sliding door systems, electric gates, garage doors, and conveyor applications. 5. Versatile Application – Suitable for sliding door tracks, industrial rollers, transport systems, and anti-friction bearings, offering broad utility across residential and commercial settings. Product Details: This rail system features a sturdy inner body paired with smooth-turning nylon treads, engineered to maintain door alignment and reduce friction during operation. The corrosion-resistant steel frame ensures durability, while the precision nylon rollers allow quiet, effortless sliding motion. Perfect for upgrading existing sliding door setups, electric gate systems, or industrial conveying equipment. Specifications: - Set Includes: 2 nylon wheel units - Size: 27x35 mm - Material: Nylon rollers, steel body - Applications: Sliding door tracks, electric gates, garage doors, conveyor rollers, transport systems, and anti-friction bearings - Use Cases: Residential, commercial, and industrial sliding door systems