1. Tap size: M3.5 x 0.6 metric thread, thread tolerance class H2. Straight cutting design, removal of chips downwards, fast and precise thread cutting. Titanium coating improves wear resistance, corrosion resistance and rust protection. 2. Applications: The tap is suitable for machining through holes or flat blind holes. for thread cutting stainless steel, copper, aluminum, etc. Micro taps are mainly used for watches and watchmaking, as well as drilling low hardness materials such as wood, plastic, and soft metals. 3. Cobalt Speed Steel Tool: Metric tap with cobalt has higher hardness and precision, better wear resistance and toughness, and higher heat resistance. It is made by adding 5%8% cobalt to general speed steel. 4. Easy Application: Used on drills, tapping machines, CNC, and milling machines. Use cutting oil for thread cutting to achieve higherquality threads and more durable taps. Please add coolant when tapping and apply rust protection oil after use to extend the tool's life.