High quality aluminum - These T -nuts are manufactured in high quality aluminum alloy, aluminum alloy material has resistance and good corrosion resistance. strong compatibility - made of aluminum Extruded with profile 30 x 23 mm, slit 8 mm, can be inserted directly into the aluminum slit hole at any mounting point. European standard - This sliding nut for T rail is mainly used for profiles in aluminum with European standard. You can use it easily Easy to use - The T -sliding nut is used for the T -groove aluminum profile to reach other parts and connect with a T bolt or others. < BR> wide range of applications - T -nut, suitable for door handles, mechanical construction, easy to use and practical to connect aluminum profiles