Prime-Line N 7175 Closet Door Hanger, Dial Action, 1/8-Inch Offset, 3/4-Inch Nylon,(Pack of 2)

This is a top hung wardrobe door roller constructed from white nylon. dial adjustment feature allows for better positioning of your wardrobe doors. 3/4 in. diameter wheel is sat on a 1/8 in. offset bracket.