7 1/3 - 7 2/3. 58.7 - 61 cm. 23 1/8" - 24". 56.2 - 58.4 cm. 22 1/8" - 23". 53.7 - 55.9 cm. 21 1/8" - 22". 6 2/5 - 6 2/3.
