This product is a metric taper die, a combination set, with a variety of specifications of winches, covering M2-M18 full-specification threads. It is suitable for auto repair, machining, hardware maintenance and other scenes, and can be manually tapped and wired. The steel is made of wear-resistant and impact-resistant, and the first and second taps are not easy to rot. It is suitable for all kinds of workpieces with multiple specifications. It is suitable for a full set of regular storage and home factory maintenance.