Originally Posted by
bovine
Huh, odd. I just installed a pair of these exact pedals a couple months ago ($36 on chainreaction, btw) and I used a standard 15mm because I couldn't locate my pedal wrench. I don't remember having any issues with the install. Maybe it depends on the angling of the particular crank arm one is working with?
I had a fairly cheap craftsman wrench and it was too wide to tighten the pedals the entire way. This was on standard Sora Cranks.