【Product Type】2020 Series L joints brackets. 【Material】Electrophoresis Zinc alloy,has excellent features in high abrasion resistance, rust proof and stability. 【Advantage】Concealed corner brace, the L corner bracket can be completely hidden in the slot of the aluminum extrusions. Suitable for 2020 european standard aluminum profiles slot 6mm And other suitable size profiles. 【Widely Used】Compatible with all 20 series fasteners and accessories. Suitable for 3D printer, CNC build, workbenches, lasers, brackets, furniture, fitness equipment, precision printers, automatic cutting machines, etc. Applied in science, electronics, labs, home technology projects, displays/exhibitions, robotics, etc. 【Package Include】24pcs L joints brackets + 48pcs set screws + 1 wrench for set screw