1-1/2 inch nylon ball bearing roller for a mirror closet door.

Steel housing with adjustable screw.
Used Monarch Mirror Doors L series steel frame door and Contractors wardrobe doors.
Housing dimensions; thickness, 1/2 inch; length, 2-1/2 inch; height, 3 inch. 

Diameter: 1-1/2-inch
Material: Nylon
Mount: Bottom
Roller Diameter: 1-1/2-inch
Roller Edge Type: Concave
Roller Material: Nylon
Type: Concave

Priced and sold in pairs.