Prime-Line N 6848 1 In. Flat Nylon Wheel Bi-Fold Door Roller (2 Pack)
This is a top centered mounted tricycle style roller that is adjustable. The
three 1 inch flat durable nylon rollers provide a smooth and long lasting,
quiet operation. They are attached to a stamped steel and nylon carriage
mounted on top of a steel threaded steel rod. The threaded rod catches into a
bracket that locks it firmly into place.
 
Product Features
  

         
Typically used on a variety of pocket closet door manufacturers
         
Top hung and center mounted tricycle design
         
1 inch flat rollers for smooth and long lasting quiet operation
         
Used on 1-3/8 inch thick closet doors
         
Threaded rod installs into bracket at top of door