The 120mm x 120mm sqaure extrusion is one of the basic shell scheme material, it can be used as upright and beam of the stand, it also can be called as post or pillar. Its material is 6063 aluminum. The wall thickness of profile is 2.1mm, it has four system grooves, the width of each groove is 4.3mm, the depth of groove is 7.5mm, and the weight per meter is 3.503kg. The product can be processed according to customer requirements, and can be reused for many times. A variety of surface treatment methods are available.