Johnson Hardware Sliding Door/Pocket Door Hanger Ball Bearing 1125 - 1 Inch Wheel, 200 lb Capacity STRENGTH: 200lbs Weight capacity SIZE: 1" Wheel diameter MATERIALS: Nylon Encapsulated Ball Bearing Wheel, Commercial Grade USE: Top Mount Hanger Plate COMPATIBLE WITH: 100, 134F, 138F, 2610F Series Track