MM to Inch Conversion

Here you will find a cross reference between MM and Inches.

MM Approx Inches
100 4"
110 4 1/4"
115 4 1/2"
120 4 3/4"
125 5"
135 5 1/4"
140 5 1/2"
145 5 3/4"
150 6"
160 6 1/4"
165 6 1/2"
175 - 180 7"
185 - 190 7 1/2"
200 8"
254 9"
250 10"
275 11"
300 12"
325 13"
350 14"
400 16"
450 18"
500 20"
600 24"
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