Size conversion chart
Inside Diameter |
|
Inches |
MM |
UK |
US |
Europe |
0.52 |
12.84 |
D |
2.25 |
41 |
0.53 |
13.57 |
E |
2.75 |
42 |
0.55 |
13.97 |
F |
3.25 |
44 |
0.56 |
14.38 |
G |
3.75 |
45 |
0.58 |
14.88 |
H |
4.25 |
46.5 |
0.59 |
15.10 |
I |
4.5 |
47 |
0.60 |
15.49 |
J |
5 |
48.5 |
0.62 |
15.90 |
K |
5.5 |
50 |
0.64 |
16.31 |
L |
6 |
51 |
0.65 |
16.71 |
M |
6.5 |
52 |
0.67 |
17.12 |
N |
6.75 |
53.5 |
0.69 |
17.53 |
O |
7 |
55 |
0.70 |
17.93 |
P |
7.5 |
56 |
0.72 |
18.34 |
Q |
8 |
57 |
0.73 |
18.75 |
R |
8.5 |
58.5 |
0.75 |
19.15 |
S |
9 |
59.5 |
0.77 |
19.56 |
T |
9.5 |
61 |
0.78 |
19.81 |
U |
10 |
62.5 |
0.79 |
20.17 |
V |
10.5 |
63 |
0.81 |
20.61 |
W |
11 |
65 |
0.83 |
20.99 |
X |
11.5 |
66 |
0.84 |
21.32 |
Y |
12 |
67.5 |
0.85 |
21.71 |
Z |
12.5 |
69 |
0.87 |
22.10 |
Z+1 |
13 |
70.5 |
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