... *48.3 3.weight:1020g 4.thickness:5mm BS1139 Swivel Clamp/BS1139 Pressed Swivel Coupler/BS1139 Pressed Rotation Coupler Size48.3 mm or 1 1/2"Weight1020 ... drop 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 ...