1. Surface Treatment: HDG,Beam Coupler, Electric Galvanized 2. Size: 0.51KG ... self color 48.3MMX48.3MM 0.51KG1. Scaffold Coupler/Beam Coupler/ Scaffolding Parts2. Item No.: ZS-E0013. ... such as double/fixed coupler, swivel coupler; fixed/swivel beam/girder coupler, putlog coupler, plank coupler, sleeve coupler ... base plate, and accessories such as T bolt, eye bolt, hex nut, flange nut. +Our pressed fixed ...