PRODUCTION DESCRIPTION
USA |
England |
Japan |
Germany |
France |
Switzerland |
China |
Circumference(mm) |
Diameter(mm) |
5 |
J1/2 |
9 |
15.75 |
49 |
9 |
9 |
49.3 |
15.7 |
6 |
L1/2 |
12 |
16.5 |
51.5 |
11.5 |
12 |
51.8 |
16.5 |
7 |
O |
14 |
17.25 |
54 |
14 |
14 |
54.4 |
17.3 |
8 |
Q |
16 |
18 |
56.5 |
16.5 |
16 |
56.9 |
18.1 |
9 |
S |
18 |
19 |
59 |
19 |
18 |
59.5 |
18.9 |
10 |
T1/2 |
20 |
20 |
61.5 |
21.5 |
20 |
62.1 |
19.8 |
11 |
V1/2 |
23 |
20.75 |
64 |
24 |
23 |
64.6 |
20.6 |
12 |
Y |
25 |
21.25 |
66.5 |
27.5 |
25 |
67.2 |
21.4 |
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