Brand Name: Prime-Line
*Diameter: 1 in.
*Length: 1/4 in.
*Material: Nylon/Steel
*Product Type: Spring Tension Roller Assembly
*Number in Package: 2 pk
*Packaging Type: Carded
*Hardware Included: Yes
*Compatibility: Metal Industries Doors
*Includes 2 roller assemblies and installation screws
* Wheel with center groove
* Heat treated, high tension steel spring