... 30mm, thickness 2mm length:per as requested, 1m, 2m or 3m...type: straight/tringle/layer/circleApplication: outdoor background, small span tent, truss ... size 50mm, thickness 3mmlength: per as requested, 1m, 2m or 3m type: straight, circleSafe span: 8mApplication: outdoor light truss, perfomance,fashion show ...