DescriptionThis is a measuring tool for rings. Simply push the end through the buckle to form a ring shape. the ring gauge onto your finger. Adjust to give a comfortable fit, checking that it just slips back over the knuckle. When best fit is achieved, read off size indicated by the arrow. It measures for USA sizes.Features- Color: Black, White. - Material: Plastic. - Size: About 11.5 x 0.5 x 0.3cm/ 4.53 x 0.2 x 0.12inch. - Lightweight and portable, convenient for you to carry. - The finger size from size 1 to 17, accurate and clear printing, easy to read and helpful, not only as ring size gauge, but also for other jewelry measurement. - Fit for wedding, birthday, party gift jewelry measuring, help you to choose the comfortable size easily, good gift for you and your family, friends. - Reusable and durable, odorless and smooth surface, would not hurt your fingers. - Adopted from material, it is durable and long lasting use.