1.The metal ring mandrel stick measure tool with US sizes of 1-13,easy to meausre the accurate size 2.With rubber hammer to fix or regulate rings or other Jewelry,rubber head would not leave traces on the jewelry or damage your jewelry 3. 27 Pieces Ring Sizer Set made of steel,US size(0-13),come in half sizes,come with a flexible cable with a screw connection which can be opened easily 4.Durable and does not rust, the jewelry making set is solid strong enough to put ring around it and working well 5.Great tool kit to measure the size of finger, can easily get the accurate size of your lover, equiped with hammer for fix rings after long time,also suitable for wire working,wire wrapping and wire jewelry