N6519 Single wheel, top hung, side mounting, offset adjustable bracket, nylon ball bearing, round edge nylon wheel, fits 0.75" to 1.25" thick doors. Features: -Door roller. -Material: Nylon. -Mount: Side. -Diameter: 0.88". -Reach: 2.88". -Dimensions: 5.44" H x 3.81" W x 1.13" D.