Material: The aluminum angle bracket is made of quality aluminum alloy, with high hardness and painted appearance. This product has a beautiful appearance, good anti-rust performance, and long service life.Function: The inside corner bracket gusset can connect two 28mm aluminum extrusions at a 90-degree angle, suitable for most 2028 series aluminum profiles.Easy Installation: The aluminum corner bracket is easy to use. Just insert both ends of the right angle bracket into the profile groove and tighten the fixing screws to fix the two profiles.Wide Applications: Widely used in aluminum frame structures in the construction industry, CNC milling machines, 3D printers, CNC laser cutting machines, robotic projects, woodworking machinery, etc.