【Type】Used on 20mm x 20mm, 10 series (1” x 1“ ) extrusion profile. 【Material】Electrophoresis zinc alloy, with excellent characteristics such as high wear resistance, rust resistance and stability. 【High Quality】Made from Zinc Alloy, high hardness and a long service life for good rust resistance and better performance. 【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. 5.【What You Get】12pcs(4pcs) 20 Series 3-Way End Corner Bracket Connector with Screws + 1pcs Wrench, 40pcs black M5x8mm hex socket cap screw bolt.1 piece 2mm wrench.;30-Days money back guarantee, 1-Year warranty, 24/7 friendly customer service. 1.【Type】Used on 20mm x 20mm, 10 series (1” x 1“ ) extrusion profile. 2.【Material】Electrophoresis zinc alloy, with excellent characteristics such as high wear resistance, rust resistance and stability. 3.【High Quality】Made from Zinc Alloy, high hardness and a long service life for good rust resistance and better performance. 4.【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. 5.【What You Get】12pcs(4pcs) 20 Series 3-Way End Corner Bracket Connector with Screws + 1pcs Wrench, 40pcs black M5x8mm hex socket cap screw bolt.1 piece 2mm wrench.;30-Days money back guarantee, 1-Year warranty, 24/7 friendly customer service.