... weight:1020g 4.thickness:5mm BS1139 Swivel Clamp/BS1139 Pressed Swivel Coupler/BS1139 Pressed Rotation Coupler ... forged and pressed scaffolding couplers/clamps, such as double/fixed coupler, swivel coupler, fixed/swivel beam/grider coupler, ... putlog coupler, plank coupler, sleeve coupler, joint pin, single coupler, etc.+We also provide standard, ledger, transom, scaffolding ...