... scaffolding plank,steel plank 2.Aluminium Frame, 3.N.W.:16.8/18.0kg Features: Scaffold Plank with Trap Door Aluminium Frame,Water-proof ... and Non-Skid Plywood walk board(scaffolding plank,steel plank) ModelCapacityN.W ... for detailed information Scaffold Plank(OT123A,B)scaffolding plank,steel plank,Aluminium Frame,N.W.:16.8/18.0kg