Size of my orifice?

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BanjoBoy

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Feb 3, 2010
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Location
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I want to get right angle valve stems, but am confused, (As usual) about all the different sizes? 8mm 8.5mm 10mm 10.5mm 11mm 11.3mm 11.5mm…

I found a thread here where they said 11.5mm, but that seems kinda big just look’in at the thing. Wanta get the right stuff for my next tire change.

Thanks

 
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Here, for example
 
When I ordered mine from Bike Effects, it asked, American or Metric. I clicked Metric and I got sent the right ones. Have No Idea what size they are. :)

 
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