Hey all just come back from the driving range using my 6 iron. The iron is 2nd hand however ive never noticed this dent in the shaft before. Its quite low down and small however is it something I need to worry about and is only cosmetic? It isnt effecting play.
Picture One
Picture Two
As you can see it doesnt have any effect on the angle of the head and it is only small, however better to ask and be safe 
