Have you ever made a bracelet only to find out when it is clasped it doesn't fit? That is because the diameter of the beads affects the final measurement, so it is impossible to measure a flat strand and gauge the final inner diameter. Put an end to the confusion with this bracelet sizer. Simply slide your bracelet over the measuring cone to measure the inside diameter. This paper mandrel will arrive flat. All you have to do is glue or tape the ends together to create a wonderful mandrel for easily sizing your bracelets.