This extension adaptor is suitable for 60mm square extrusion, its material is aluminium alloy, and its standard length is 300mm and its width is 44mm, and its size can also be customized. The connector includes 4 screws LT-EG412/10, thus it can be inserted and fixed into 2 pieces 60mm square profiles. This fastening is widely used to realize large-sized exhibition booth. With the idea of "Green Exhibition", all of LT products are environmental-friendly and non-polluting, and they can be reused. By adopting the German standard, the quality of Lingtong’s products is well accepted by European and the U.S. markets.