I can understand the original OP request. There are so many different spoke wrenches out there now days. I stick with Park but that's because they just happen to be the ones I originally got after loosing the Campagnolo wrench I brought back from Italy The three and four sided issue I was not even aware of till youse guys pointed it out...
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No matter where you're at... There you are... Δf:=f(1/2)-f(-1/2)