The idea behind this beater is good,  it's supposed to help you mix pastry dough. Cutting butter into pastry dough can be messy and time consuming so I was excited to have an easier way to do this task. But the beater didn't work well at all for this.  The butter just got stuck all over the beater and thy dough never turned into fine crumbs like it's supposed to. I ended up having to just cut in thy butter with a pastry blender tool as usual anyway. 

I gave 3 stars as maybe this would work well just for mixing pastry after the butter is cut in. And as usual with KitchenAid the quality of the tool is very good.