1、TAPPING SET: Including a tapping shank and 7pcs tapping chuck, with different specification sizes, and suitable for different tapping situations. 2、ALLOY STEEL: Made of excellent alloy steel material, with high strength and hardness, wear and corrosion resistance, and has a long service life. 3、REASONABLE DESIGN: On the end face, there are jaws that engage with the machine tool spindle, and there are steel ball, spring and compression screw on the shank. 4、SAFE OPERATION: The tapping kit has fast change and anti overload protection functions, safe and reliable in operation, and reduces labor strength. 5、GOOD PROTECTION: When the tap reaches a certain torsion, it will automatically slip, preventing the tap from breaking, and protecting the workpiece and the tap.