These Prime-Line products bypass closet door top-hung back rollers and brackets feature a round-edge nylon wheel fixed to an offset bracket that can adjust to fit as needed. Fits 3/4-1-3/8 inch by-passing closet doorsNylon wheel fixed to a steel bracket3/4 inch diameter ball bearing wheel with rounded edgeAdjustable bracket design with 1/2 inch offsetMounts easily to the side of the back by-passing door