Description If you are looking for a professional garage door roller, then your research is over here. That's because our product can meet your need. Adopted of premium material, practical and durable for long time use, not easy to get deformed and bring you much convenience. Features -Color:White-Material:Nylon, steel-Size:10.50X4.50X4.50cm/4.13X1.77X1.77in- Made of reinforced nylon and steel material for durability, easy to use and easy to install.- Front and rear sealing covers prevent dust and dirt from penetrating the drum.- Can match most residential garage doors up to 7 feet, making older doors run quieter and more stable.- This garage door roller can make older doors run quieter and more stable.- Stable characteristics, high performance and in great reliability, simple, easy to install.Packing list: 2 x garage door rollers