Packaging and Size -- You receive 1 set of bracelet mandrel sizer set including hammer, stainless steel round bracelet mandrel (30cm/11.81 inches long, graduated) Wide range of uses -- The bracelet mandrel sizer is perfect for reshaping, enlarging and correcting the roundness of bracelets. It is a must-have tool for jewelry makers and repairers High-quality materials -- The bracelet mandrel sizer is made of reliable stainless steel material to durability and . It is designed to withstand regular use without affecting its shape and performance. Double hammer design -- Plastic and rubber double-sided. If you are using metal, you need a hammer with rubber and plastic heads to avoid scratches Easy to use -- The bracelet mandrel sizer set can easily enlarge rings and measure bracelet sizes, and is a repair tool for rings and bracelets