Item description according to supplier: BOHIN durable plastic rings are perfect for making and installing all your curtains. BOHIN offers you 9 sizes: 10 mm x 15 mm, 17 mm x 23 mm, 20 mm x 27 mm, 22 mm x 28 mm, 30 mm x 39 mm, 40 mm x 50 mm, 40 mm x 60 mm, 50 mm x 70 mm and 60 mm x 80 mm, in two colours: white and brown.
