It is a connection extrusion. The connection extrusion is used when two extrusion whose grooves are4.3mm. could not be connected by tension locks. It is a flexible component which can use freely. This kind of connection extrusion can be easily removed and is easy to install. It size is 10*8.5mm. It weighs 0.144kg 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.