Size: about grown-up: 2.01~3.07 inch(51~78mm) inner diameter, bead: 0.14x0.16 inch(3.5x4mm) and 0.12 inch(3mm), pendant: 0.31x0.10 inch(8x2.5mm), kids: 1.69~2.64 inch(43~67mm) inner diameter.
