1. Surface Treatment: HDG,Beam Coupler, Electric Galvanized 2. Size: 0.51KG 3. Certificate: EN74, ... Color), self color 48.3MMX48.3MM 0.51KG1. Scaffold Coupler/Beam Coupler/ Scaffolding Parts2. Item No.: ZS-E0013. Size: 0.51Kg ... and pressed scaffolding couplers/clamps, such as double/fixed coupler, swivel coupler; fixed/swivel beam/girder coupler, putlog coupler, plank coupler, sleeve ...