These nylon track wheels are designed to provide smooth and quiet operation for your garage door. Made from sturdy nylon, they are durable and resistant to wear and tear. The rollers are practical for replacing old or worn-out parts, ensuring your garage door operates efficiently and silently. Ideal for residential and commercial use. Features -Color:Multi -Material:Nylon,metal -Size: 10.50X4.50X4.50cm/4.13X1.77X1.77in -Durable and reliable: made from sturdy nylon material, these rollers are sturdy and durable, ensuring longterm use -Smooth sliding: the rollers are designed to glide effortlessly , ensuring smooth opening and closing of doors -Quiet operation: special materials reduce friction noise, ensuring a operation -Easy installation: the set rollers, making installation simple and convenient for various applications like garage doors -Practical : making these rollers an for garage doors Package list: 4 wheels