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 ... *H) 1400*350*700(3) maxi length of blade 650(4)length of guide 1100(5)sharpening method ...