... nut7. Standard: BS1139&EN74 Class A&B8. High Quality Forged Coupler1. Scaffold coupler British Type Half Swivel Coupler2. Size: 1.30kg 48.3x48.33 ... couplers/clamps, such as double/fixed coupler, swivel coupler; fixed/swivel beam/girder coupler, putlog coupler, plank coupler, sleeve coupler, joint pin, single coupler, etc. +We also provide ...