pen grasp development

1:16

4:20

3:12

3:12

3:12

2:20

کوتاه

20:18

3:12

1:10

20:24

36:37

11:18

2:57

3:12

22:51

27:23

کوتاه

3:12

3:01

کوتاه

2:15

8:07

کوتاه

1:40:51

5:42

4:12

1:15:45

37:53

19:34

1:04

2:26

11:14

2:04

10:45

41:10

10:25

22:00

1:20:28

8:38