This tension lock can connect all kinds of 100mm square and round aluminum profiles, it has two screws LT-EG409/13, by using T30 Hexagon spline wrenches to fix screws. This connector has three parts: shell, eccentric and reed. The shell of this lock is zinc alloy and the material of reed is in high-quality, which is used for military. Our vision is to bring environmental-friendly exhibition system into every expo space, the quality of all LT materials comply with German standards, up to now, the products have already been sold to more than 103 countries all over the world and are well accepted by domestic and overseas customers.