Not sure what it is or what it does but it cant be much to replace. I also have a working RCBS Automatic lead feeder with the tray that rotates and feeds bullets down tube incremently. I have a lot of the tubes and parts that come out of feeder that connect it to press but not positive its all there. The item "RCBS PRO 2000 PROGRESSIVE RELOADER RIFLE HANDGUN ONLY HEAVY DUTY" is in sale since Thursday, June 10, 2021. This item is in the category "Sporting Goods\Hunting\Reloading Equipment\Presses & Accessories".The seller is "scott122620" and is located in Goreville, Illinois. This item can be shipped to United States.