A coupler is a vital linking device used in construction and scaffolding to connect two tubes or pipes together. It ensures a secure and rigid connection between scaffold components, such as tubes or ledger beams. Couplers come in various types, such as swivel, fixed, or right-angle, each serving specific purposes like corner bracing, ledger connections, or diagonal bracing. By firmly joining structural elements, couplers enhance the stability and load-bearing capacity of scaffolds, formwork, and other construction frameworks. Their versatility and reliability make them essential for creating safe and robust structures in various construction applications.