ALUMINIUM BEAM SYSTEM IS SAFE ,,ROBUST,LONG-LASTING,VERSATILE AND USER-FREIENDLY,YOU CAN WITH WOOD INSTEAD OF PLASTIC. ALUMINIUM BEAM SYSTEM IS SAFE ,,ROBUST,LONG-LASTING,VERSATILE AND USER-FREIENDLY,YOU CAN WITH WOOD INSTEAD OF PLASTIC.ALUMINIUM GRADE :6061-T6 ALUMINIUM BEAM