The finger is 5.5 cm thick, which in ring size means the finger circumference is 55mm. Chinese ring size is generally divided into Hong Kong version of the scale table and the mainland version of the scale table, in the Hong Kong version of the scale table, the circumference of 55mm, the diameter of 16.5mm, the corresponding ring number is 13; In the continental version of the scale table, the circumference is 55mm, the diameter is 17.5mm, and the corresponding ring number is 15.
