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Hi everyone, Albert from Madison here. Understandably some of you are concerned about what might appear to be cracks at the tips of your crankarms just below the pedal inserts.This was brought to Shimano's attention some time ago and upon further investigation they were identified as forging marks. Whilst a little disconcerting in appearance, they should be visible to a certain extent on all cranks (new or old) and are simply an unsightly byproduct of the Shimano manufacturing process.Rest assured these marks do not in any way affect the performance or durability of the cranks/chainsets and to date no cranks have been returned to us with actual cracks at the end of the crank arm.ThanksAlbert(Madison - Shimano UK Dist.)