? the diameter of the spindle\axle or the space 'tween the pedal and crank arm?
Those are the 'normal' spindle diameters I posted.
Some need a thin wrench, but usually a 9/16 mouth.
On the web it said 9/16, lose the adjustable wrench, prob too wide.
http://www.shopalot.co.uk/dcjs/produ...?ProductID=365