... 5 high precisiion Tungsten carbide blades and machine knives will offer you better performance and increasedproductivityforcuttingthefollowingmaterials:LLDPE,PP,PA,PVC ... ,HDPE,BOPP,metal or stretch film and others.Blades are designed for slitting procees in film,foil ... line----automatic sharpening assembly line.Production fast,the blades are sharp and durable. tungsten steel small circle saw blade ...