Set of 2 lead valve gaskets for Super Dio Dio. Model is AF18/27/28. Thickness is about 0.5mm. Aftermarket. We use sheets made by Japan Balcar Industrial and are certified by professional shops. Manufacturer Part Number: 17111-GAH-A00/17112-GAH-A00 The color of the material may change without prior notice, but the performance of the product does not change.