... blades feature: Perfect cutting angle geometry Perpendicular cutting of paper core, tube Material:9CrSi,Cr12MoV Selection of slitting blade ... W6Mo5Cr4V2/W18Cr4V and etc. Slitting blade is mainly used for paper,film,gold,silver foil,aluminum,copper films,tapes and other ... items for dividing,asking for the least cutting resistance,the largest wear resistance ...