Size: 7mm Inner diameter: 16cm Please note that there may be slight color differences between the photos and the actual product. The photos were taken outdoors in sunlight, and no color adjustments have been made. Please check the images for inclusions and black spots. We have set the price as low as possible, so we are unable to offer discounts on single items. Please be sure to read the self-introduction before purchasing. We offer discounts for combined purchases (excluding auctions). If you would like to request a discount, please state your desired price based on the discount amount listed in the self-introduction section. We will not accept requests for prices other than those specified, so please understand. m(_ _)m We have many other items for sale! ♪♪