I wanted another attachment for my kitchenaid for heavier mixing.  Such as cutting butter better and just heavier mixing.  This attachment is definitely heavy duty.  It is heavier, fits my mixer great and mixes very well with heavier ingredients.  This is one of the heavier attachments I have seen and used.  I reccomend for all kitchenaid users that can use this attachment.  I love to bake around holidays and birthdays so this is very helpful tool.