The 3J razor blade of Stellram company is a of series of razor blade of the horn before losing new breed, dimension of its the chamfer that break bits had new improvement. Can use treatment stainless steel and excel in alloy, cutting blade accumulates the generation of bits tumour via can decreasing after honing, after classics CVD and PVD coating are handled, can reduce heat and mechanical wear. In addition, use these razor blade to be able to reduce cutting force 30% , be machined the surface of workpiece is bright and clean degree improve somewhat. CNC Milling