ITEM NAME:5PCS HSS Machine Screw Thread Metric Plug Tap Drill Set M3 M4 M5 M6 M8ME Feature: 100% brand new and high quality. Spiral tap is one of the thread processing tool, belonging to tap. Spiral groove taps chip performance is excellent, tapping smooth. Practical and durable. Specification: Material: 6542HSS Color: as picture shown Type: M3*0.5 /M4*0.7/M5*0.8/M6*1.0/M8*1.25 Surface treatment: nitriding (Note: Please allow slight color difference due to light and screen.) Package include: 5pc x Tap thread wire threading tool.Type: M3 0.5 /M4 0.7/M5 0.8/M6 1.0/M8 1.25. Spiral tap is one of the thread processing tool, belonging to tap. 5pc x Tap thread wire threading tool. Color: as picture shown.