[High-Performance Durability] Garage door rollers are designed to deliver reliable performance and durability. Featuring reinforced 6200ZZ bearings and clear caps that protect against dust and grime, these rollers ensure smooth and efficient operation. [Ultra-Quiet Operation] The 1.8 inch nylon construction ensures ultra-quiet operation, allowing for noise-free opening and closing of your garage door. [Compatible with Most Garage Doors] These nylon garage door rollers are compatible with most residential garage doors, including standard garage door rails and wooden automatic door rails, providing hassle-free installation. [Smooth and Strong Sealing] The design reduces rotational friction between rollers and shafts, resulting in smoother and quieter door movement. The sturdy housing helps prevent dust and dirt from entering the bearing, promoting long-lasting, smooth performance. [Rigorously Tested] These rollers have been tested for durability and performance, with the ability to withstand up to 100,000 cycles at a 160-pound load, ensuring long-term reliability. Material: Nylon Color: Blue Package Contents: 12 x Bearing Roller Note: Light reflection and different displays may cause slight variations in color. Measurement may vary by +/- 1-3 cm.