Those are standard Zenith, System Ex jobbies. Check the bottom of this table for their use with OpenSports, laced 32 3x. http://www.cyclebasket.com/sitepage.php?id=5 Confirms what I found via SpokeCalc.
For a build like this just go with standard double butted spokes. http://www.cyclebasket.com/m9b0s454p0/Components_/Spokes_-_Stainless_Steel_Double_Butted_-_Silver_
@Smallfurry started
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Those are standard Zenith, System Ex jobbies. Check the bottom of this table for their use with OpenSports, laced 32 3x.
http://www.cyclebasket.com/sitepage.php?id=5
Confirms what I found via SpokeCalc.
For a build like this just go with standard double butted spokes.
http://www.cyclebasket.com/m9b0s454p0/Components_/Spokes_-_Stainless_Steel_Double_Butted_-_Silver_