Set of two. Will not sell separately. 20cm x 20cm In the second photo, there are faint stains due to long-term storage at home. The other one is clean without stains, but since it's a casual inspection, we appreciate your purchase if you don't mind. Received as a non-sale item in the early 2000s. Unused, has not been taken out of the bag, but has faint stains as mentioned above.