US SIZE |
DIAMETER* (mm) |
CIRCUMFERENCE* (mm) |
UK SIZE |
|---|---|---|---|
6 |
16,5 |
52 |
L 1/2 |
7 |
17,3 |
55 |
N 1/2 |
8 |
18,2 |
57 |
P 1/2 |
9 |
18,9 |
59 |
R 1/2 |
10 |
19,8 |
62 |
T 1/2 |
11 |
20,6 |
65 |
V 1/2 |
*Approximately
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