1 , the selection of the ball
The weight of the bowling basically from 6 lbs to 16 lbs , 11 .
2 , simple ball selection criteria:
6 to 7 lbs pupils
8 to 9 lbs of high school students
Young women of 10 to 12 pounds
Young men of 13 to 14 pounds
15 to 16 pounds , the senior players
Weight 1 / 10 ball selection criteria:
40 ~ 49KG 10 pounds
50 ~ 54KG 11 pounds
55 ~ 59KG 12 pounds
60 ~ 64KG 13 pounds
65 ~ 69KG 14 pounds
70 ~ 74KG 15 pounds
75KG more than 16 pounds