21 yards inside length 13cm

22 yards, 13.5cm long

23 yards inner length 14cm

24 yards inner length 14.5cm

25 yards within the length of 15cm

26 yards within the length of 16cm

Within 27 yards, 16.5cm long

28 yards within the length of 17cm

29 yards inner length 17.5cm

30 yards inner length 18cm

31 yards in length 18.6cm

32 yards in length 19.2cm

33 yards inner length 19.7cm

34 yards inside length 20.3cm

35 yards inner length 21cm

36 yards within the length of 21.6cm

21-25 whole hand shot 5 pairs

26-30 full hand shot 5 pairs

31-36 whole hand racket 6 pairs