This is a used Hobart 4356G mixer grinder that is in good working condition. It has the number 66 grinding end on it, and a 20 hp drive motor. The #66 grind end takes screens that are 8-5/8" in diameter. We ran it and it works fine. The stud that is currently on the end of the grinder feed screw is for a double cut set up, where you use 2 Knifes and 2 Plates. We do not have any plates or knifes to go with this grinder. I talked to Speco (they are a company that makes knifes and plates for these grinders ( I was referred to them by Hobart )) they said that the regular stud that I would need to set this machine up for a single plate/knife set up costs $325 and a knife costs $175 then if you go with a 1/8" plate, the plate would cost $635. This machine is wired for 230v 3phase.