【High Quality】The small brackets are made of high quality aluminum alloy materials. Durable and long service life. 【Suitable for 3030 Series Aluminum Profiles】 Corner bracket for industrial aluminum profile. Suitable for 3030 series aluminum profiles. 【Note】 Aluminum profiles must be cut to 90° before installation. 【Easy to Install】 When installed, it is inserted into the pit of two profiles, and then tightened with set screws.