The KitchenAid Flex Edge Beater is hands-down an essential for my bowl-lift KitchenAid mixer.  It does an outstanding job scraping the ingredients from the sides of the bowl and incorporating them into my creation while beating the mixture.  Previously, I would stop the mixer & use a rubber spatula to bring down the ingredients but this flex edge beater eliminates any need to do so.  Like all of my other accessories, it is easy to clean & very substantial.  It really is an essential & I couldn't be more pleased with it.  5 stars!