1、Non Slip Pattern Design: The surface of the winch bar has an non slip pattern design, which makes the hand grip more powerful and the tapping more stable 2、Firmer Locking: Taps, die adapters, after tightening with screws, the lock is firmer, and the thread cutting is more stable and more assured 3、Conical Locking Hole: Round threading die is designed with conical locking hole. After the screws are aligned and locked, the locking force is strong and not easy to loosen 4、Tool Steel: Made of high quality tool steel material, which is durable and has a longer service life, an indispensable tool for tapping operation 5、Wide Application: This tapping set is widely used for model processing, hand made, DIY use, can be used for manual processing and power tools, etc.