[packing list]: two American (1-17) + one British (A-Z) ring measuring tools [widely used]: the ring size kit is suitable for measuring engagement rings, wedding rings, proposal rings, birthday rings, jewelry, etc [usage]: just put it on your hand as a ring and adjust it to the right position. Measure the inner diameter of the ring and take it out at any time, just like a ring. [easy to use]: light weight, accurate and reusable, accurate and clear printing, and can be carried with you [peace of mind]: our ring size measurement tool can help you order lovely rings online without worrying about inappropriate size. Type: Ring Size Measurement size:11x0.5x0.15cm Material:PU colour:Black + White Package Contents: 3 x Ring size measurement Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.