Berry's Products have given you the ability to separate your media and sort your brass with the Berry's Rotary Brass Sorter / Media Separator. The little blue knob in the center of the black basket allows you to change the size of the grate depending on what caliber you want to sort 1st (hint: start with the smallest caliber). Once set, repeat the step on the other side of the basket, then close the outer clam shell. Now rotate and you will hear your sorted brass falling out. Never again will you have to hand sort an entire bucket of range brass or make a mess with a pan sorter. From one reloader to another, this product is well worth the price!!