... dispaly 2.Good for audition Layer truss system for hanging Speakers in big concert:Specfication: ItemSpecificationUnitWeight(kg) PillarDiameter*Height*Thickness48×1 ... ,570x2mmpc5.848×1,829x2mmpc7.548×2,046x2mmpc8.3 Diagonal pipeX Y Z1,570 1,500 2,090pc7.61,829 2,000 ... used for running work platform Layer truss system for hanging Speakers in big concert