Small EZ Bobs are 1 7/8" (4.8cm) in diameter and are used for bundling threads to keep them from tangling when making a long braid. Since a braid takes up half the length of the thread it starts with, a 20" (50.8cm) braid would start with at least 40" (101.6cm) of thread. EZ Bobs also easily hold enough small seed beads for a bracelet or necklace.