Quantity and Size to Help Your Operation: You will receive 100 finger sizers for rings, 50 white and 50 black, sufficient to meet your measurement needs and applications Clear Size to Help Your Measurement: The finger measure for ring size ranges from 1 to 17 US size. The printing is accurate and clear, allowing you to measure precisely and apply them in various situations Reliable Material to Support Your Usage: The ring size measurement tool is made of plastic, lightweight and comfortable, non-irritating to the skin. It is portable and can be reused multiple times Simple Way to Use: Place the ring measurer around your finger and gently tighten until it fits snugly. Note the number indicated by the arrow to determine your ring size Various Functions in Daily Life: This ring sizer is suitable for measuring various items such as wedding rings, engagement rings, party gifts, jewelry, and other small accessories, helping you quickly determine their size Material: Plastic Color: Black + White Package Contents: 50 x Ring Measurement Tool (Black) 50 x Ring Measurement Tool (White) Only the above package content is included; other items are not included Note: Due to light reflection and differences in display screens, the color of the item in the image may vary slightly from the actual product. Measurement may have an error margin of +/- 1-3 cm