Rebar couplers is a new type of connection and fastening technology, which can effectively improve the connection conditions during screw connection and greatly improve the reliability of screw connection. Its 5 outstanding properties are as follows: 

1. Rebar couplers are used in a variety of low-strength materials, which can greatly improve the wear resistance of screw connections and avoid damage to the connecting threads. 

2. Due to the flexibility of rebar couplers, the load distribution on each circle of the thread can be more even, the pitch and tooth form deviation between the screw and the screw hole can be eliminated, and vibration can be absorbed, thus improving the connection strength and fatigue resistance of the thread strength. 

3. Rebar couplers can lock the screw in the threaded hole, so that the screw will not loosen when subjected to shock and vibration, and the process performance is better than the usual locking device. 

4. Compared with the method of inserting steel or copper bushings, under the same strength conditions, screws with smaller size and higher strength can be selected, which can reduce the volume and reduce the weight. 

5. The hardness of rebar couplers is higher than that of screws, so the wear and tear in the process of connecting and disassembling with screws is small and can be used repeatedly. According to relevant experimental studies, the tensile strength of rebar couplers is more than 7 times that of screws, so the wire thread insert will not be damaged even if the screw is broken.