The circular bracelet mandrel is equipped with a diameter scale, and the diameter of the bracelet can be visually seen through the winding wire. The bracelet mandrel may undergo circular deformations and recovery. The diameter of the bracelet mandrel is 7.8cm/3.1inch, and the minimum diameter is 3.5cm/1.4inch. wood, it is hard enough to withstands hammering, but soft enough to leave marks or scratch the metal. Easy to use: Used to shape ankles, bracelets, and bracelets, widely used in the production process of jewelry and handicrafts. It is very suitable for those who use jewelry making as a hobby and online shoppers to determine the size of bracelets. Suitable for fixing bent rings, making the bent rings round again.