Material: High quality dimensional measuring tools, we have two materials to choose from, metal and plastic materials, double-faced soft plastic mallet These products have unparalleled durability and lifespan.Function: First place the ring on the metal measuring tool, select the appropriate size for the ring, and gently tap the top with a hammer to easily make and shape the ring, fixing the bent ring. Perfect for polishing and sanding to keep the ring perfectSuitable Tool: A jewelry hammer will provide perfect impact without scratching or damaging the material surface. This is a great basic ring regulator repair kit, perfect for both professionals and beginners. High quality jewelry styling tools.Size:double-faced soft plastic mallet: 240x63x25mm, 1pc;iron ring shaper tool: 259x24mm, 1pc; measuring size plastic ring size sticks: 265x12~24mm, 1pc.Multiple sizes can meet the needs of craft enthusiasts.Uses of Ring Size Adjust Kit: This jewelry tools kit is a great choice for your wedding and engagement rings which are not according to your finger size. With this ring size measurement tool you can feel secure because your rings will not slip off accidently