The shelf can be used o long time .The cross base is more stable.Probably,convenient to carry,easy to assemble 1. The high can reach 2.5 meter2,easy to fix and stand 3,Beautiful appearance,Perfect design4,Material:all alluminum .The base cross is made by iron 5,High standard of craftsmanship6,Color:silver,Weight:3kg7,Can be adjustable freely at any height8 Packaging: oxford bag