Description: Dimensions : 115x5x1mm, adjustable measuring ruler, edge grinding, no damage to the skin, can be used with confidence. High quality plastic: Made of new high quality plastic, light and sturdy, not easy to damage, not easy to fade, not hurting hands. Size: 1-17 US size, and 1-30 Japanese size, the printing is accurate and clear, not only can be used as a ring size table, but also can be used for other jewelry measurement. Method of use: You just need to put it as a ring on your hand and adjust it to a suitable place to measure. The inner diameter of the ring is measured, and it can be removed at any time, just like a ring Protable: Light weight, accurate and reusable, the printing is accurate and clear, and it can be carried along where ever you travel Size Chart: 115x5x1mm/4.53x5x0.04inch Package Includes: 2 pieces Ring Ruler Measurer(6 Pack) Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!