All of these are from Cousins UK link provided to me from other members
http://www.cousinsuk.com/document/category/2073.aspx
All in MM
Tropic 11 28.1 Inside Diameter 29.2 Outside 2.2 High
12 28.2 29.3 2.5
13 28.5 29.5 2.4
14 28.3 29.3 2.5
19 28.2 30.3 5.2 27.9 30.5 3.5
21 29.5 30.6 2.8
http://www.cousinsuk.com/document/category/2073.aspx
All in MM
Tropic 11 28.1 Inside Diameter 29.2 Outside 2.2 High
12 28.2 29.3 2.5
13 28.5 29.5 2.4
14 28.3 29.3 2.5
19 28.2 30.3 5.2 27.9 30.5 3.5
21 29.5 30.6 2.8