26 inner length 18cm

27 inner length 18.5cm

28 inner length 19cm

29 inner length 19.5cm

30 within the length of 20cm

31 inner length 20.5cm

32 inner length 21cm

33 inner length 21.5cm

34 inside length 22cm

35 inner length 22.5cm

36 inner length 23cm

37 inner length 23.5cm

38 inner length 24cm

39 inner length 24.5cm