Fairly certain you are right. Look at the threaded pedal section and compare to Cooks. Cooks are flat on the front and recessed on the rear where as Power Arms have a heavy recess on the front and are flat on the rear like these onesBtw i think that these arn‘t Cook,s this schould be Storck Powerarms
nice picture of my black cranks that i have for sale on fbFairly certain you are right. Look at the threaded pedal section and compare to Cooks. Cooks are flat on the front and recessed on the rear where as Power Arms have a heavy recess on the front and are flat on the rear like these ones
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get the point, but they just look similar to my eye.I'd maybe remove the 'Cook Dogbone' from title.