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57GENERAL PURPOSE DRILLINGISCAR SUMO-CHAM exchangeable drilling heads are available in a diameter range of 4 mm up to 32.9 mm (0.157 to 1.295 inch) diameters with 0.1 millimeter (0.004 inches) increments and are suitable for machining holes up to 12D deep. Diameter RangeL/D Ratio%u00d84-32 mm (0.157%u201d-1.260%u201d)DCN...1.5D - %u00d86-32 mmDCN...3D - %u00d84-32 mmDCN...5D - %u00d84-32 mmDCN...8D - %u00d84.5-32 mmDCN...12D - %u00d86-32 mm1.5%u00d7D 3%u00d7D 5%u00d7D 8%u00d7D 12%u00d7D* Avaliable with cylidrical or one flat shank
