DescriptionThis corner bracket is made of premium material, which can withstand long-lasting use. Features the aluminum material, which has high durability, not easy to deform. Fine workmanship, ensures practicality.Features-Color:Black-Material:Aluminum -Size:3.40X3.40X1.90cm/1.34X1.34X0.75in- Made of aluminum material, it has high wear resistance, rust resistance and stability. - Concealed Corner Brackets, 2020 Series 3-way end corner brackets can be completely hidden in aluminum extrusion slots. - This extrusion connector fits 6mm groove European 2020 aluminum profile. - Widely used in construction industry aluminum frame structures, 3D printers, CNC routers, engraving machines, fish tanks, robot projects. - Outstanding workmanship, reasonable design, stable and practical, will bring you a good using experience.