Furniture castor 1.Item:19.01.001 2.Material:Nylon 3.Dia:30mm,40mm,50mm 4.Cheap ... ,with 30*30*1.5mm plate 40MM,with 38*38*1.5mm plate 50MM,with 38*38*1.5mm plate More sizes are available ... , if you have any inquiry, pls contact me freely! Furniture castor(19.01.001 ...