- These steel rollers will outlast plastic and nylon rollers, but should not be used in coastal areas, or where exposed to prolonged high-humidity
 - 5/16 in. wheel thickness, 1/4 in. inside diameter of axle hole with 1-1/2 in. outside diameter
 - Features concave (grooved) edge for use over raised tracks
 - Maximum load rating of 105 lbs. per wheel
 - Constructed of a steel wheel, steel race, and steel ball bearings for greatest support
 - Steel ball bearing wheels for long-lasting usage
 - Used on a variety of sliding patio door systems
 - For further dimensional information, please see the line drawing
 
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