Scaffolding coupler is used to assemble tube-and coupler scaffolding system.Scaffolding Coupler or scaffolding clamp is the main part of tubular scaffolding system. It plays a fasten and connection functions in the system. Simple structure and big loading capacity make couplers easier and widely used on construction projects. Scaffolding couplers include swivel and fixed coupler.
Advantage:
The tube and coupler scaffolding system is the best solution for construction or maintenance works. 
economic convenience 
safety and quality