Material: Zinc Alloy Color: Silver Free Size Inner Diameter: Approximately 5.7cm x Approximately 4.8cm Inner Circumference: Adjustable from approximately 18.5cm, plus or minus 2cm Width: Approximately 5mm * When adjusting the size, please adjust it gradually by hand. Applying sudden strong force may cause damage. * Please note that there may be slight errors due to amateur measurements. 【Request】 * If there is a problem with the delivered product, please contact us before leaving a review. (We cannot respond after a review has been left.) * The color of the actual product may differ slightly from the photos due to the monitor you are using or the lighting during photography. * We will ship in simple packaging. Accordingly, there may be creases or marks. e897@550