Metal ring core stick measurement tool, the size of the is 1-13, which is easy to measure accurate size Fix or adjust the ring or other jewelry with rubber hammer, the rubber head will not leave traces on the jewelry or damage your jewelry and not , jewelry production set is strong and , you can wear rings around it, the effect is good The excellent toolkit of the size of the finger can easily obtain the accurate size of the lover. It is equipped with a hammer with a long time fixed ring. It is also suitable for metal wire processing, metal wire packaging and metal silk jewelry A hammer with long -term fixed rings is also suitable for metal silk processing, metal wire packaging and metal silk jewelry Colour:As Shown Material:Metal Package Contents: 1 * hammer 1 * Ring Sizer 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.