Description:

Features: Metric Machine Tap [Shank Width: 9.8mm / 0.39 inch, Thread Length: 33.7mm / 1.33 inch, Total Length: 101mm / 3.98 inch], Reduced Shank Drill Bit[Cutting Diameter: 14.5mm / 0.57", Shank Diameter: 1/2" / 12.5mm (approx.), Cutting Edge Length: 78mm / 3.07", Overall Length: 157mm / 6.18"]. The taper taps can be applied for threading machine and electric drills, use to cut thread inside hole, creating a female surface which functions like a nut.. Suitable for most metals, iron plate, copper, zinc, alloy steel, abrasive steel, A3 steel, stainless steel, etc.. Appropriate addition of coolant (e.g., water) can extend the service life when tapping.. Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge. High-speed steel tool is good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance.