Durosharp Knives supplies Steel made Round Slitters. Durosharp Knives manufactures packing blades, perforation blades, plastic sealing blades, binding knives, trimmer knives, etc. The Steel made Round Slitters is specially made for strip packaging machines. The round slitters are used to package pharmaceuticals and also to cut other types of metallic foils. The grade of steel used in round slitters and the hardness of the blade are determined by the material tube cut.