I think its Alloy.
Had quite a bit of trouble sourcing a replacement as the current batch of 5/8 inners was faulty around the country, poor fit apparently.
I've managed to source a almost new one from Gumtree around the corner, pics look good, will pick up Thursday and hopefully i can reassemble the clutch.
Its been a pleasure stripping the machine and giving it a good clean. It's amazing how taking things apart makes things easier to understand.
Will post some pics once its up and running again
Alex
