Inner Joint Pin 1.weight:570g 2.thickness:2.5mm 3. ... 4.surface:golden/silver zinc galvanized Scaffolding Coupler - Inner Joint PinSize48.6 mm or 1 1/2"Weight570 gramsThickness2.5 ... swivel beam/grider coupler, putlog coupler, plank coupler, sleeve coupler, joint pin, single coupler, etc.+We also provide standard, ledger, transom ... golden/silver zinc galvanized or hot dipped galvanized. Inner Joint Pin