16.5cm inside size 26

17cm inside size 27

17.5cm inside size 28

18cm inside size 29

18.5cm inside size 30

19cm inside size 31

Inner length 19.5cm in size 32

20cm inside size 33

Inner length 20.5cm in size 34

21cm inside size 35

Inner length 21.5cm in size 36

22cm inside size 37