The soft rubber hammer has two sides and can be used to flatten or reinforce steel wire. The rubber head will not leave any traces on the jewelry or damage the jewelry. Make your ring more rounded.Made a winding ring that is very suitable for ring structures.Keep it in perfect shape. US size 0-13. The ring is metallic, elegant, durable and rust-free.The smooth surface is exquisitely polished and will not hurt your hands or rings.ring size circles are clearly marked in US sizes 0-13, including full and half sizes for different fingers. Colour:As Shown Material:Metal Package Contents: 1 set * ring making kit 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.