It is an Upright Extrusion90°in showcase system. The three extrusions can be connected vertically on three sides of the Upright Extrusion90°. It has 5 system grooves. It can be used as table legs or body of a showcase. It has a side which is a smooth rounded surface. Its diameter is 35mm. Its total size is 33*33mm. It weighs 0.743kg per meter. Its max length is 6m. If you have any other requirements, LingTong will meet your needs. It is made of aluminium. The products of LingTong are green and environmentally friendly. If there are some relative needs, LingTong will provide the best service for you in exhibition construction.