hub plate, material 440C HRC58-60, material420 HRC52-55,model #12-#42; material D2 HRC59-63 #12-#56 European and American style,0,3,4.5,6,8,10,12,16,19,25mm meat hole availablehub plate. #22, #12, #22 and so onstainless steel or carbon steelsurface-brightening, polishHRC50--551 notch, 2 notches or 3 notchesdegree at buyer's choice parts for meat chopper