flate blades length: 650mm; blade material can be:SKH51,SKD11,SKS7,SK2,Cr12Mov,H13, ... ,K30 etc It can sharpen the flat blade of plastic crushers, blade material can be,SKH51,SKD11,SKS7,SK2,Cr12Mov,H13 ... ,9CrSi,6CrW2Si,W6Mo5Cr4V2,YG8,YT15,P20,K30 etc(1)Blade sharpening machine ... dimension(L,W,H) 1600mm*800mm*1500mm knife sharpening machine of plastic crusher