The Genuine KitchenAid FGA-2 Food Grinder Original Replacement Part Lock Ring Nut is in good preowned condition without any discoloration or cracks.  
This replacement piece It is specifically designed for the KitchenAid FGA-2 model meat grinder Kitchenaid mixer attachment.

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Item kept in smoke-free environment.  
I utilize recycled shipping materials when available and ship out the next day in most cases.