Upgrade your garage door with the 12 pack of 1.8 inch Nylon Sealed Garage Door Rollers. These rollers feature reinforced 6200ZZ bearings for high performance and durability, and clear caps to protect against dust and grime. The nylon construction provides ultra-quiet operation, and each roller has a diameter of 1.8 inch to fit a 2 inch track, with a 4 inch length stem. Tested to perform up to 100,000 cycles at 160lbs load test, these rollers are a reliable choice for your garage door. 【High-Performance Durability】Our garage door rollers are designed to deliver high-performance and durability, making them a reliable choice for your garage door. They feature reinforced 6200ZZ bearings and clear caps that protect against dust and grime, ensuring longevity and efficiency. 【Ultra-Quiet Operation】The 1.8 inch nylon construction of our garage door rollers ensures ultra-quiet operation. This means that you can enjoy opening and closing your garage door without any annoying noise. 【Compatible with Most Garage Doors】Our nylon garage door rollers are compatible with the vast majority of residential garage doors, including standard garage door rails, wooden automatic door rails, and more. You won't have to worry about compatibility issues when installing our rollers. 【Smooth and Strong Sealing】Our garage door rollers feature ball bearings that reduce rotational friction between rollers and shafts. This results in smoother and quieter garage door opening and closing. Additionally, the sturdy housing of each roller prevents dust and dirt from penetrating the bearing, ensuring smooth operation and a longer lifespan. 【Rigorously Tested】Our garage door rollers have been rigorously tested to ensure superior performance. They can perform up to 100,000 cycles at a 160-pound load test, you can trust their reliability and durability.