Pearl launch --- There are a lot of them. But for me, the diameter is 9mm

5 mins 9 secs

4 mins 10 secs

6 mins 4 secs

6 mins 21 secs

2 mins 5 secs

8 mins 43 secs

12 mins 36 secs

5 mins 30 secs

2 mins 10 secs

4 mins 12 secs

2 mins 57 secs

9 mins 33 secs

2 mins 48 secs

5 mins 3 secs

2 mins 38 secs

7 mins 25 secs

6 mins 51 secs

15 mins 50 secs

20 mins 46 secs

24 mins 41 secs

6 mins 3 secs

16 mins 51 secs

19 mins 30 secs

19 mins 32 secs

6 mins 28 secs

18 mins 34 secs

7 mins 22 secs

3 mins 10 secs

15 mins 14 secs

18 mins 34 secs

18 mins 10 secs

18 mins 50 secs

13 mins 10 secs

12 mins 10 secs

15 mins 12 secs

17 mins 55 secs

16 mins 33 secs

12 mins 1 sec

8 mins 15 secs

6 mins 46 secs