Excellent chip control using a single insert style with four cutting edges and a 3 dimensional chipbreaker for a wide range of applications. Self-centring minimises shock on entering the workpiece. Chip pocket helps to effectively remove the chips produced by the centre cutting edge, enabling very economical use. Accurate and stable drilling of different cutting materials it has a low noise drilling and high cutting parameter, short cutting time. Long tool life. Inserts with four cutting edges. Various cutting materials AH120, AH740 and T313W together with chipbreaker -DJ and -DS for highly efficient material adjusted drilling operations. Reducing tool costs, improving productivity.