Manufacturer Unknown For 28-30mm 1.25kg plates x 2 2.5kg plates x 2 5kg plates x 2 Some peeling of the plating, discoloration, and rust. 5kg plates x 2 3056 yen Diameter: Approximately 208mm Width: 28mm Compatible with dumbbells and barbell shafts from brands like GEARMAX, the old Stronger, Lavie, and the old Reebok. A 28mm or 30mm dumbbell set of approximately 20kg is 5500 yen.