... 4.surface:golden/silver zinc galvanized Scaffolding Coupler - Inner Joint PinSize48.6 mm or 1 1/2"Weight570 gramsThickness2. ... beam/grider coupler, putlog coupler, plank coupler, sleeve coupler, joint pin, single coupler, etc.+We also provide standard, ledger, ... transom, scaffolding ladder, adjustable u-head, universaljack, base plate, and accessories such as T bolt ...