The drills/cutters are made of HSS high-speed steel. The cutters are suitable for cutting various materials.
The set includes:
Thread drills M3x0.5-M3x0.6-M4x0.7-M4x0.75-M5x0.8-M5x0.9-M6x0.75-M6x1.0-M7x0.75-M7x1.0-M8x1.0-M8x1.25-M10x1.25-M10x1.5-M12x1.5-M12x1.75 and 1/8"-27NPT
Thread cutters M3x0.5-M3x0.6-M4x0.7-M4x0.75-M5x0.8-M5x0.9-M6x0.75-M6x1.0-M7x0.75-M7x1.0-M8x1.0-M8x1.25-M10x1.25-M10x1.5-M12x1.5-M12x1.75 and 1/8"-27NPT